Grammar Rule in 30 Seconds
Use 'than' for comparisons and 'then' for time or sequences.
- Use 'than' when comparing two things: 'She is taller than him.'
- Use 'then' for time or order: 'We ate, then we left.'
- Use 'then' for consequences: 'If it rains, then we stay home.'
Overview
than and then. While separated by only a single vowel, their roles in a sentence are entirely distinct. This distinction is not arbitrary; it stems from their different grammatical functions.Than is a conjunction, a word whose sole purpose is to connect elements in a comparison. Then is an adverb, a word that modifies verbs and clauses by providing information about time, sequence, or logical result.How This Grammar Works
than and then correctly, you must first internalize their core grammatical identities. One compares, the other specifies time or order. Let's analyze each word's specific function and the linguistic job it performs.Than as a ConjunctionThan is a subordinating conjunction used to introduce the second element or clause in a comparison. Its only job is to create a link between two unequal things. Whenever you use a comparative adjective (like taller, faster, more expensive) or a comparative adverb (like more quickly), than is the word that introduces what you are measuring against.Than is the bridge between them.My current project is more complex than the last one.(Comparescurrent projectandthe last one)She speaks English more fluently than I do.(Compares the manner of speaking)
than introduces a subordinate clause (e.g., ...than the last one was, ...than I speak English). In modern English, we often omit the rest of the clause for conciseness, but its grammatical structure as a clause-linker remains.Then as an AdverbThen is an adverb that answers the questions when? or what happens next?. It does not compare things. Instead, it places actions or states in time or a logical sequence. Then has three primary uses, all related to this core function.- 1To Indicate Sequence (Next in order): This is its most frequent use. It shows the progression from one event to another. It signals to the reader or listener that you are moving to the next item on a timeline.
First, you need to complete the online form, then you will receive a confirmation email.
- 1To Refer to a Specific Time (At that time):
Thencan refer to a particular moment in the past or future that has already been established. It acts as a temporal placeholder.
In 2015, the company was much smaller. We had only ten employees then.(Here,then= 'at that time' or 'in 2015')The meeting is at 3 PM. I will be ready to present then.(Here,then= 'at 3 PM')
- 1To Show Logical Consequence (In that case / As a result): This usage connects a condition to a result. It’s often used in
if...thenconstructions, but theifclause can also be implied.
If you have finished your work, then you are free to go home.- (To a friend who says they are hungry)
You're hungry? Then let's get something to eat.(Here,thenmeans 'in that case' or 'as a result of you being hungry')
Formation Pattern
than or then. Understanding these patterns provides a practical framework for building your own correct sentences.
Than
Than almost always follows a comparative form. The basic structure is consistent.
than + Noun 2 | This laptop is faster than my old one. |
more/less + Adjective + than + Noun 2 | The movie was more interesting than the book. |
than + Clause/Noun | He finished the race more quickly than everyone else. |
Rather + Verb + than + Verb | I would rather drive than take the train. |
Other + than | She has no other options than to accept the offer. |
Then
then is more flexible in its placement. Its position depends on its function (sequence, time, or consequence).
then Clause 2. | We reviewed the data, then we made a decision. |
Then, second action. | Log into your account. Then, navigate to the settings page. |
then. | The price of flights was much lower back then. |
then-adjective, noun | The then-CEO of the company made the announcement. (Used as a hyphenated adjective before a noun) |
If...then) | If [Condition], then [Result]. | If the data is correct, then our strategy is working. |
Then, [Result]. | The alarm didn't go off. Then, that's why you're late. |
than is rigid in its role, always tied to a comparison. Then is a versatile adverb that can move around the sentence to modify the timing or logic of the action.
When To Use It
than and then is dictated entirely by the context of your communication. Here is how they appear in various real-world situations.than for Comparisons, Opinions, and Preferences.than is the necessary word. This is common in academic writing, professional analysis, and everyday decision-making.- In a Work Email:
After reviewing both proposals, I believe Option A offers a better long-term value than Option B, despite the higher initial cost. - In University Discussions:
Marx's theory of alienation is arguably more influential in sociology than his economic predictions. - In Casual Texting:
Honestly, I'd rather stay in tonight than go to that party. - Expressing a Preference:
I find that listening to podcasts is more relaxing than watching TV.
then for Sequences, Instructions, and Results.then is the correct choice. It organizes information according to a timeline or cause-and-effect.- In Project Management:
We will gather the user requirements first. Then, we will create the wireframes and mockups for client approval. - Giving Technical Support:
First, clear your browser's cache. Then, restart the application. - Recounting a Story:
I was just about to leave my house, and then I realized I had forgotten my keys. - In Logical Reasoning:
The defendant has no alibi. If that's true, then he must be the primary suspect.
next or at that moment, use then. If you are using a word like more, less, better, or worse, you almost certainly need than.
Common Mistakes
than and then are common even among native speakers in casual writing, but are considered basic errors in formal or professional contexts. Understanding the typical pitfalls is the best way to avoid them.- 1The Standard Mix-up: This is the most frequent error, caused by their similar sounds.
- Incorrect:
My new phone has a better camera then my old one. - Why it's wrong: The sentence is a comparison, triggered by the word
better. It requires the conjunctionthan. - Correct:
My new phone has a better camera than my old one.
- Incorrect:
We went for a long walk, and than we got ice cream. - Why it's wrong: The sentence describes a sequence of events. It requires the adverb
then. - Correct:
We went for a long walk, and then we got ice cream.
- 1The Pronoun Case after
than: This is a more advanced grammatical point. Becausethanis a conjunction that introduces a clause, the pronoun that follows it should technically be in the subject case (I,he,she,we,they).
- Formal/Correct:
You are much taller than I.(The implied full clause is...than I am.) - Informal/Common:
You are much taller than me. - Guideline: In formal writing (academic papers, business reports), using the subject pronoun (
than I) is preferred. In everyday speech and informal writing, the object pronoun (than me) is extremely common and widely accepted. Treatingthanas a preposition that takes an object is now a normal feature of informal English.
- 1Confusion in the phrase
different than: The phrasedifferent fromis traditionally considered the most formal and correct choice in British English. However,different thanis standard in American English, especially when a clause follows.
- Formal (BrE/AmE):
My experience was different from yours. - Standard (AmE):
My experience was different than yours. - Widely Accepted (esp. with a clause):
The city looks very different than I remember.
- 1Redundant
theninif...thenconstructions: In many cases, the wordthenis not strictly necessary after anifclause, especially in speech.
- With
then:If you are late, then you will miss the introduction. - Without
then:If you are late, you will miss the introduction. - Guideline: Both are correct. Using
thenadds emphasis and formality, making the logical connection more explicit. Omitting it can make the sentence flow more naturally in casual conversation.
Real Conversations
Seeing than and then in natural dialogue helps solidify the difference between them. Notice how the context of comparison versus sequence makes the choice clear.
Scenario 1: Professional Email Exchange
*Subject: Project Phoenix Update*
Alex: Hi team, I've just finished the initial data analysis. It seems the user engagement on the new feature is lower than we projected. I think we should meet to discuss this. First, I'll compile a full report, then I'll send out a meeting invitation for sometime tomorrow.
Ben: Thanks, Alex. A meeting sounds good. Is tomorrow morning better for you than the afternoon? Let me know what time works, and then I'll adjust my schedule.
Alex: Morning is perfect. Then we'll have the rest of the day to act on our decisions.
Scenario 2: Planning a Holiday (WhatsApp Chat)
Maria: ok so i looked at flights. flying to spain is way cheaper than flying to italy.
Chloe: really? but the hotels in italy looked nicer. I'd rather have a nicer hotel than a cheaper flight tbh.
Maria: true. ok so let's do italy then. we can book the flights first and then find a hotel within our budget.
Chloe: perfect! then we're all set! :)
Scenario 3: Cooking Instructions
Chef on a video: Make sure the water is boiling. Then, and only then, should you add the pasta. You want to cook it for about eight minutes. Any longer than that and it will be too soft. Check it at eight minutes, and if it's still too firm, then give it another 60 seconds.
Quick FAQ
then to mean 'in that case'?Yes, this is a very common and correct use of then. It shows a logical consequence. For example:
The roads are closed."Okay then, we'll have to take the train."
then used as an adjective, like the then-president. Is that correct?Yes, this is a standard and slightly formal use. Then can be used as an adjective before a noun to mean
at that particular time.For example,
The report was submitted to the then-director of the department. It signifies that the person held that title at that past time, but may not hold it now.
now and then?This is a fixed idiom. Now and then means occasionally or sometimes. For example, I don't see my university friends often, but we meet for dinner now and then. In this phrase, then retains its meaning of 'at another time.'
Yes, although it can be subtle in fast speech. Than is typically pronounced with a short 'a' sound /ðæn/, as in pan. Then is pronounced with a short 'e' sound /ðɛn/, as in pen. Focusing on this mouth shape (a vs. e) can help you distinguish them, but be aware that in unstressed situations, they can sound very similar.
than to then or vice versa. Why?Autocorrect algorithms are predictive and based on common patterns, but they don't truly understand the grammar of your sentence. If you write a sequence of events, it might incorrectly suggest than, or if you type a comparative word, it might guess then. It's a useful tool, but you must be the final proofreader. Your grammatical knowledge is more reliable than the software's suggestion.
Other than is a common fixed phrase that acts like a preposition meaning except or besides. For example: The office was empty other than the security guard. It introduces an exception to a general statement. Do not confuse it with a direct comparison.
Usage Patterns for Than and Then
| Word | Function | Common Preceding Words | Example |
|---|---|---|---|
|
Than
|
Comparison
|
more, less, -er adjectives, rather
|
Better than ever.
|
|
Then
|
Time (Sequence)
|
First, Next, And
|
And then he left.
|
|
Then
|
Time (Point)
|
Back, Just, Since
|
Back then, we were young.
|
|
Then
|
Consequence
|
If, Since
|
If so, then what?
|
|
Then
|
Adjective
|
The
|
The then-mayor.
|
Meanings
The words 'than' and 'then' are often confused because they sound similar, but 'than' is used for comparisons while 'then' indicates time, sequence, or result.
Comparison
Used to introduce the second element in a comparison.
“He is faster than a speeding bullet.”
“Nothing is better than a cold drink on a hot day.”
Time/Sequence
Used to indicate what happens next in a series of events.
“First, wash your hands, then start cooking.”
“We lived in London then.”
Consequence/Logic
Used in 'if-then' constructions to show a result.
“If you are tired, then you should sleep.”
“If 2+2=4, then 4-2=2.”
Reference Table
| 单词 | 功能 | 例句 |
|---|---|---|
|
`than`
|
比较
|
She is taller `than` her brother.
|
|
`then`
|
顺序（接下来）
|
I went to the gym, `then` I went to work.
|
|
`than`
|
比较（与 `more` 连用）
|
This is more difficult `than` I thought.
|
|
`then`
|
在某个特定时间
|
I was living in London back `then`.
|
|
`than`
|
比较（与 `less` 连用）
|
The movie was less exciting `than` the book.
|
|
`then`
|
结果（如果...那么）
|
If you're tired, `then` you should rest.
|
|
`than`
|
与 `rather` 连用
|
I would rather have coffee `than` tea.
|
|
`then`
|
表示“既然如此”
|
A: "I'm busy." B: "Okay, I'll ask you later `then`."
|
正式程度
The current proposal is more comprehensive than the previous iteration. (business/casual)
This plan is better than the last one. (business/casual)
This one's way better than that. (business/casual)
This one's miles better than that trash. (business/casual)
`Than` 与 `Then`
该用哪个词？
你是在比较两件事物吗？
你是在谈论时间、顺序或结果吗？
`Than` 和 `Then` 的作用
THAN (比较)
- Taller than Comparison
- More than Comparison
- Rather than Preference
THEN (时间/顺序)
- First... then Sequence
- Back then Point in Time
- If... then Consequence
词语分类
比较词
- • Than
- • As
- • Like
- • Versus
时间/顺序词
- • Then
- • Next
- • After
- • Finally
按水平分级的例句
I am taller than you.
First eat, then play.
This apple is bigger than that one.
I will see you then.
She runs faster than her brother.
We went to the park, then we went home.
I would rather have water than juice.
If you are ready, then let's go.
The movie was much better than I expected.
I lived in Paris then, so I spoke French every day.
There is no other way than to tell the truth.
Finish your homework, and then you can watch TV.
The results were more significant than previously thought.
But then, we must consider the environmental impact.
He is more of a mentor than a boss to me.
Since you've finished, then you're free to leave.
No sooner had I arrived than the meeting began.
The then-current regulations were quite restrictive.
It was more a cry for help than a demand.
Then again, we could just stay home.
The proposal was less a solution than a stopgap measure.
He was a man of the then-dominant social class.
Rather than succumb to pressure, she resigned.
If that is the case, then so be it.
容易混淆
Learners think 'rather' is a time-based choice.
Learners confuse the exception with a sequence.
Because it involves time, learners want to use 'then'.
常见错误
I am taller then you.
I am taller than you.
I eat breakfast than I go to work.
I eat breakfast then I go to work.
I'd rather stay then go.
I'd rather stay than go.
See you than!
See you then!
It was more then enough.
It was more than enough.
Other then that, it was fine.
Other than that, it was fine.
No sooner had he left then it rained.
No sooner had he left than it rained.
句型
I like ___ more than ___.
First, I ___, then I ___.
If it ___, then we will ___.
It was less a ___ than a ___.
Real World Usage
See you then!
I have more experience in sales than in marketing.
Whisk the eggs, then add the flour.
Is this one cheaper than the other?
Go past the bank, then turn right.
Nothing better than a beach day!
字母 'A' vs. 'E' 小窍门
than 里有字母 'A'，就像 'compAre'（比较）一样。then 里有字母 'E'，就像 'timE'（时间）或 'sEquence'（顺序）一样。是不是很简单？小心自动更正
用 'Next' 来测试
then。如果听起来怪怪的，那多半就是 than 啦！大家都会犯的错误
Smart Tips
Check if you can replace the word with 'in comparison to'. If yes, use 'than'.
Check if you can replace the word with 'next'. If yes, use 'then'.
Always pair 'rather' with 'than'. It's a fixed team.
Treat 'more' and 'less' as magnets that pull 'than' toward them.
发音
The Schwa Reduction
In casual speech, both 'than' and 'then' are reduced to /ðən/. You must rely on context to understand which is being used.
Emphasis
When stressed, 'than' sounds like /ðæn/ (rhymes with 'pan') and 'then' sounds like /ðɛn/ (rhymes with 'pen').
Comparative Stress
It's BETTER than that.
Stress falls on the adjective, making 'than' very short.
Sequential Stress
And THEN what?
Stress on 'then' to show surprise or request more info.
记住它
记忆技巧
ThAn has an 'A' for Comparison. ThEn has an 'E' for TimE.
视觉联想
Imagine a balance scale for 'than' (comparing weights) and a clock for 'then' (marking the hours passing).
Rhyme
When you compare, 'than' is there. When time goes by, 'then' is your guy.
Story
I wanted to be faster THAN a car. I practiced every day, and THEN I finally won the race.
Word Web
挑战
Write three sentences about your morning routine using 'then' and two sentences comparing your home to your office using 'than'.
文化笔记
Native speakers make this mistake constantly in informal writing (social media). Using it correctly is a sign of high literacy.
In formal logic and mathematics, 'if-then' is the standard. Omitting 'then' is common in casual speech but 'then' is often kept for clarity in complex proofs.
In some dialects, 'than' might be pronounced more like 'then', making the distinction even harder for local learners.
Both words derive from the Old English word 'thanne' or 'thonne'.
对话开场白
Would you rather live in the city or the countryside? Why is one better than the other?
What was life like for you ten years ago? How was it different than now?
Describe your perfect morning routine step-by-step.
If you won the lottery tomorrow, then what would be your first purchase?
日记主题
常见错误
Test Yourself
This restaurant is much better ___ the one we went to last week.
than 在这里用来比较两家餐厅的品质。选择正确的句子：
then 是正确的，因为它表示事件的顺序（先喝咖啡，然后购物）。Find and fix the mistake:
I think I was more optimistic back than.
then，因为它指的是过去的一个时间点（“那时”）。Score: /3
练习题
8 exercisesShe is much taller ____ her sister.
We went to the cinema, and ____ we had dinner.
Find and fix the mistake:
I would rather have tea then coffee.
Finish your work. You can go home.
1. Than, 2. Then
If you don't study, ____ you might fail.
He has no other friends ____ me.
Find and fix the mistake:
Which is correct?
Score: /8
Practice Bank
13 exercisesIf you finish your chores, ___ you can have dessert.
Learning a new language is more difficult ___ I expected.
选择正确的句子：
将这些词语排列成一个句子：
We had dinner, than we watched a film.
翻译成英文：'我宁愿晚点开始也不愿早点开始。'
将单词与其主要作用匹配：
选择正确的句子：
I have less experience ___ she does, but I'm a faster learner.
将这些词语排列成一个句子：
The sequel was nowhere near as good then the original.
翻译成英文：'除此之外，一切都很好。'
He's more of a friend ___ a colleague.
Score: /13
常见问题 (8)
No. In standard English, 'then' is never used for comparison. This is a very common spelling error, but grammatically, they are distinct.
Both are used. 'Better than me' is common in casual speech. 'Better than I (am)' is more formal. In both cases, you use `than`.
In English, unstressed vowels often turn into a 'schwa' sound /ə/. Since 'than' and 'then' are usually not the most important words in a sentence, they both get shortened to /ðən/.
In this case, 'then' acts as an adjective meaning 'at that time'. It refers to the person who was president at the time being discussed.
Only if 'more' is the end of one thought and 'then' starts a new one: 'I couldn't take any more. Then, I left.' But for comparison, it is always 'more than'.
Think of the letters: Th**a**n = **A** comparison. Th**e**n = Tim**e**.
Yes, they are very similar. 'I'd rather have tea than coffee' means the same as 'I'll have tea instead of coffee'.
Rarely. 'Than' usually follows a comparative word. 'Then' starts sentences all the time (e.g., 'Then, we went home.').
Scaffolded Practice
1
2
3
4
Mastery Progress
Needs Practice
Improving
Strong
Mastered
In Other Languages
que / entonces
English requires two different words where Spanish often uses 'que' or 'de'.
que / ensuite
The phonetic similarity in English doesn't exist in French.
als / dann
German 'denn' sounds like 'then' but means 'because', which adds another layer of confusion.
より (yori) / それから (sorekara)
The concepts are grammatically unrelated in Japanese.
من (min) / ثم (thumma)
The English words are much more similar to each other than the Arabic equivalents.
比 (bǐ) / 然后 (ránhòu)
The structure of comparison in Chinese is very different from the English 'Adjective + than' structure.
Learning Path
Prerequisites
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