「Let's」を使った提案の仕方
Grammar Rule in 30 Seconds
Use 'Let's' followed by a base verb to suggest an activity for you and someone else to do together.
- Use 'Let's' + base verb for affirmative suggestions: 'Let's dance!'
- Use 'Let's not' + base verb for negative suggestions: 'Let's not wait.'
- Never use 'to' or '-ing' after 'Let's': 'Let's go' (not 'Let's to go').
Overview
let's の出番だ。これは英語における究極の「社会的潤滑油」なんだ。退屈な 'I want'(私が〜したい)を、ワクワクする 'we do'(私たちが〜する)に変えてくれる。仲間外れにしないし、フレンドリーで、信じられないほど簡単に使える。友達にNetflixの一気見についてメールするときも、Zoom休憩中にコーヒーを買いに行こうと提案するときも、このルールは君の親友になるはずだ。How This Grammar Works
let's は短縮形だ。動詞の let と目的格代名詞の us を組み合わせたものなんだ。でも、現代英語では、ハイファンタジー小説の登場人物か、大聖堂の司祭でもない限り、let us なんて言うことはまずない。日常生活では、常に let's だ。Formation Pattern
let's を使って提案するのは、今日英語でやることの中で一番簡単なことかもしれない。とても厳格でシンプルなレシピに従っている。以下のステップを見てみよう:
let's で始める。
to も -ing も -ed もなし)。
Let's go | 行こう
Let's eat | 食べよう
Let's not stay | 長居するのはやめよう
let's の後に not を足すだけ。
Let's not + order(注文する) + sushi(寿司を) again(また)。
not だけ。あまりに簡単すぎて、カンニングしてる気分になるかもね。
When To Use It
- Socializing: 「授業の後に飲みに行こうよ(
Let'sgrab a drink)。」 - Gaming: 「ミドルレーンに突っ込もう(
Let'srush)!」 - Work: 「月曜日に連絡を取り合いましょう(
Let'stouch base)。」(みんな大好きな会社の決まり文句だよね?) - Self-talk: 先延ばしにしているとき、自分自身に使うこともある。「よし、このエッセイを書き始めよう(
Okay, let's start)。」
Let's get lost(迷子になろう=冒険しよう)」みたいなインスタのキャプションをつけるのに最適だ。あるいは、TikTokのコメントで興奮を表す「Let's goooo!」みたいにね。命令と質問の間を埋めてくれる表現なんだ。Common Mistakes
- The 'to' Trap:
Let's to goと言いたくなるかもしれない。これは絶対ダメ。動詞は「裸(naked)」でなきゃいけない。toは禁止だ。 - The '-ing' Trap:
Let's goingと言うのは避けよう。ループにはまっているように聞こえるからね。シンプルにLet's goでいこう。 - The Apostrophe: 小さな
'を忘れがちだ。もしletsと書いたら、飼い主を朝寝坊させてあげる(lets)猫の話になってしまう。提案するときはlet'sを使おう。 - Double Negatives:
Let's don't goと言おうとする人がいる。とてもカジュアルな方言や歌で聞くことはあるかもしれないけれど、A2試験や一般的な明確なコミュニケーションのためには、Let's not goを貫こう。
Contrast With Similar Patterns
提案する方法は他にもあって、適切なものを選ぶともっとネイティブらしく聞こえるよ。
1. Why don't we...?: これは少し柔らかい表現。質問形式だね。Let's のほうが、自信のある提案という感じだ。
2. How about [verb]-ing?: ブレインストーミングに最適。「ピザを頼むのはどう?(How about ordering pizza?)」
3. Shall we?: これはとてもフォーマル。パートナーの両親に好印象を与えたいときや、時代劇の中にいるならこれを使おう。
4. Would you like to...?: これは丁寧で、相手の願望に焦点を当てている。Let's はグループの活動に焦点を当てているんだ。
Quick FAQ
let's は相手が一人だけでも使える?
もちろん!2人でも200人でも使えるよ。
仕事で使っても大丈夫?
全然OK。偉そうな上司ではなく、チームプレイヤーのように聞こえるからね。
超フォーマルにしたい場合は?
Let us を使おう。でも気をつけて、王冠や魔法の杖を持ってないか探されるかもしれないよ。
let's の提案にはどう返事すればいい?
「Yes, let's!(そうしよう!)」や「I'd rather not(やめておきたいな)」、あるいは「Good idea!(いい考えだね!)」だね。
Let's go! はいつも提案なの?
いつもじゃないよ!お気に入りのチームがゴールを決めた後に「やったー!」「すげー!」('I'm excited!' や 'Great job!')と言う意味で使われることもよくあるんだ。
Forming Suggestions with Let's
| Type | Structure | Example Verb | Result |
|---|---|---|---|
|
Affirmative
|
Let's + Base Verb
|
go
|
Let's go!
|
|
Negative
|
Let's not + Base Verb
|
stay
|
Let's not stay.
|
|
With Tag
|
Let's + Base Verb + , shall we?
|
start
|
Let's start, shall we?
|
|
Formal
|
Let us + Base Verb
|
pray
|
Let us pray.
|
|
Self-Talk
|
Let's + see/think
|
see
|
Let's see...
|
|
Emphatic
|
Let's just + Base Verb
|
do
|
Let's just do it.
|
Contractions and Variations
| Full Form | Contraction | Usage Context |
|---|---|---|
|
Let us
|
Let's
|
Standard everyday use
|
|
Let us not
|
Let's not
|
Standard negative use
|
|
Do not let us
|
Don't let's
|
Rare/Old-fashioned/British
|
Meanings
A contraction of 'let us,' used to make a proposal or suggestion that includes the speaker and the listener(s).
Inclusive Suggestion
Proposing an action for the whole group to perform together.
“Let's watch a movie tonight.”
“Let's go to the beach this weekend.”
Instructional/Polite Command
A way for a leader or teacher to give a command that sounds like a shared activity.
“Let's open our books to page 42.”
“Let's be quiet while the baby is sleeping.”
Self-Encouragement
The speaker talking to themselves to initiate an action.
“Let's see... where did I leave my keys?”
“Let's get to work!”
Formal Invitation
Using the full 'Let us' for high-stakes or ceremonial suggestions.
“Let us pray.”
“Let us consider the consequences of this decision.”
Reference Table
| タイプ | 形 | 例文 | 意味 |
|---|---|---|---|
|
肯定的な提案
|
Let's + 動詞の原形
|
Let's go for a walk.
|
散歩に行こうと提案する
|
|
否定的な提案
|
Let's not + 動詞の原形
|
Let's not wait too long.
|
あまり長く待たないように提案する
|
|
同意を求める(カジュアル)
|
Let's + 動詞の原形, shall we?
|
Let's grab a coffee, shall we?
|
コーヒーを飲みに行こう、どうかな?
|
|
同意を求める(一般的)
|
Let's + 動詞の原形, okay?
|
Let's finish this task, okay?
|
このタスクを終わらせよう、大丈夫?
|
|
よくある間違い
|
❌ Let's + to + 動詞
|
❌ Let's to eat.
|
間違い:「Let's」の後に「to」は使わない
|
|
よくある間違い
|
❌ Let's + -ing形動詞
|
❌ Let's studying.
|
間違い:動詞の原形だけを使う
|
フォーマル度スペクトル
Let us begin the proceedings. (Professional/Social)
Let's start the meeting. (Professional/Social)
Let's get going. (Professional/Social)
Let's get this show on the road. (Professional/Social)
「Let's」で提案をしよう
基本的な構造
- Let's + Base Verb 常に動詞の一番シンプルな形を使います。
肯定的な提案
- Let's go! グループで行動を提案する。
- Let's eat pizza. 共有する活動を提案する。
否定的な提案
- Let's not forget. 行動を避けるように提案する。
- Let's not wait. 何かをしないように提案する。
主な使い方
- Group Activities 友達と楽しいことを計画する。
- Shared Decisions 一緒に行動を決定する。
提案の様々な方法
「Let's」を使うかどうかの判断
活動を提案したいですか?
その提案にあなたと少なくとももう一人が含まれますか?
文脈は一般的にカジュアルですか、それともフレンドリーですか?
「Let's」が輝く場所
社会的な計画
- • Let's grab coffee.
- • Let's watch a movie.
- • Let's go out tonight.
仕事・勉強
- • Let's start the meeting.
- • Let's review the notes.
- • Let's take a break.
問題解決
- • Let's think of a solution.
- • Let's not give up.
- • Let's try a new method.
日々の決断
- • Let's order takeout.
- • Let's clean the apartment.
- • Let's walk instead.
レベル別の例文
Let's play!
Let's play!
Let's go home.
Let's go home.
Let's eat pizza.
Let's eat pizza.
Let's dance.
Let's dance.
Let's not watch this movie.
Let's not watch this movie.
Let's meet at the station at 5 PM.
Let's meet at the station at 5 PM.
Let's buy some milk on the way home.
Let's buy some milk on the way home.
Let's not talk about work right now.
Let's not talk about work right now.
Let's take a break for ten minutes, shall we?
Let's take a break for ten minutes, shall we?
Let's try to finish this project by Friday.
Let's try to finish this project by Friday.
Let's see if there are any tickets left.
Let's see if there are any tickets left.
Let's not forget to bring the map.
Let's not forget to bring the map.
Let's assume that the budget is approved.
Let's assume that the budget is approved.
Let's be realistic about our expectations.
Let's be realistic about our expectations.
Let's not get bogged down in the details.
Let's not get bogged down in the details.
Let's just say it wasn't his best performance.
Let's just say it wasn't his best performance.
Let's not lose sight of our primary objective.
Let's not lose sight of our primary objective.
Let us examine the evidence more closely.
Let us examine the evidence more closely.
Let's not pretend this is an easy situation.
Let's not pretend this is an easy situation.
Let's leave it at that for today.
Let's leave it at that for today.
Let us then proceed with a renewed sense of urgency.
Let us then proceed with a renewed sense of urgency.
Let's not, for one moment, believe that this is over.
Let's not, for one moment, believe that this is over.
Let's see... if I recall correctly, the event was in 1994.
Let's see... if I recall correctly, the event was in 1994.
Let us not go gentle into that good night.
Let us not go gentle into that good night.
間違えやすい
Learners often confuse the inclusive 'us' with the singular 'me'.
Both are used for suggestions, but 'We should' is a statement of opinion.
They are almost identical in meaning but different in grammar.
よくある間違い
Let's to go to the park.
Let's go to the park.
Let's going now.
Let's go now.
Let's we eat.
Let's eat.
Let's plays.
Let's play.
Let's don't stop.
Let's not stop.
Let's no go.
Let's not go.
Let's us go.
Let's go.
Let's go, will we?
Let's go, shall we?
Let us go to the movies! (to a friend)
Let's go to the movies!
Let's not to forget.
Let's not forget.
Let's not getting ahead of ourselves.
Let's not get ahead of ourselves.
文型パターン
Let's ___ this weekend.
Let's not ___ because ___.
Let's ___, shall we?
Let's just say that ___.
Real World Usage
Let's meet at 8!
Let's look at the next slide.
Let's ask the hotel for a map.
Let's order from the new Thai place.
Let's attack the base!
Let's discuss my experience in marketing.
短く簡潔に!
「to」のワナに気をつけて!
付加疑問文を加えよう
場の空気を読もう
I suggest we... や「~しませんか?」: Would you like to...?を使った方が丁寧だよ。
励ますときにも使おう
Smart Tips
Imagine the 'to' is a wall blocking your way. Kick it out! Just say 'Let's' and the action.
Add 'shall we?' to the end. It turns a suggestion into a collaborative request.
Say 'Let's see...' slowly. It's a natural filler that native speakers use all the time.
Don't use 'don't'. Just put 'not' after 'Let's'.
発音
The 's' sound
The 's' in 'Let's' is unvoiced /s/ because it follows the unvoiced /t/.
Reduction
In fast speech, 'Let's' can sound like 'L's' or 'T's'.
Falling Intonation
Let's go. ↘
A standard, confident suggestion.
Rising Intonation (with tag)
Let's go, shall we? ↗
A polite request for agreement.
暗記しよう
記憶術
LET'S = Leave Everything, Together Start!
視覚的連想
Imagine a group of friends standing in a circle. One person puts their hand in the middle and says 'Let's!' and everyone else puts their hands in too. This represents the inclusive, group nature of the word.
Rhyme
Don't say 'to', don't say 'ing', with 'Let's' the base verb is the thing!
Story
A group of explorers is standing at the edge of a jungle. The leader doesn't say 'You go in!' (Imperative) or 'I am going in' (Statement). Instead, she says 'Let's explore!' and they all step forward together. This shows that 'Let's' is about shared adventure.
Word Web
チャレンジ
Look around you right now. Think of three things you could suggest doing with a friend using 'Let's' (e.g., 'Let's drink water', 'Let's open the window'). Say them out loud!
文化メモ
Using 'Let's' is a key way to show 'politeness through inclusion.' It avoids the bossiness of a direct command.
The tag 'shall we?' is very common in the UK to soften suggestions and make them sound more collaborative or sophisticated.
Americans often use 'Let's' followed by 'just' to emphasize that an action is simple or a good solution to a problem.
From the Old English 'lætan' (to allow/leave) and 'us' (the objective form of 'we').
会話のきっかけ
Let's do something fun this weekend! What do you suggest?
I'm so hungry. Let's find a place to eat.
We have a lot of work to do. Let's make a plan.
Let's imagine we won the lottery. What would we do?
日記のテーマ
よくある間違い
Test Yourself
It's getting late. Let's ___ home.
Find and fix the mistake:
Let's to meet at the library for our project.
Translate into English: 'No olvidemos comprar leche.'
Answer starts with: ["L...
Score: /3
練習問題
8 exercisesYou want to suggest going to the cinema.
It's raining. Let's ___ (not / walk) to the park.
Find and fix the mistake:
Let's we start the meeting now.
Open the window.
A: I'm tired of studying. B: ___
You can use 'Let's' to suggest something for only one person (not including yourself).
1. Let's eat. 2. Let's see. 3. Let's not.
not / let's / forget / keys / the
Score: /8
Practice Bank
15 exercisesI'm bored. Let's ___ a new game.
Lets prepare dinner together tonight.
Choose the correct sentence:
Translate into English: 'Tomemos un café después de clase.'
Arrange these words into a sentence:
Match the beginnings with the correct endings:
The sun is out! Let's ___ outside.
Let's trying a new restaurant tonight.
Which sentence is correct?
Translate into English: 'No esperemos por ellos.'
Put the words in the correct order:
Connect the suggestion starts with their best endings:
We have a lot of work. Let's ___ focused.
Let's not waiting for permission.
Which sentence is grammatically correct?
Score: /15
よくある質問 (8)
Technically no, but people often say `Let's see...` or `Let's think...` when they are talking to themselves. It's like you are inviting your brain to work with you!
`Let's` is for everyday suggestions. `Let us` is very formal and usually used in speeches, prayers, or when asking for permission (e.g., 'Let us go' meaning 'Release us').
In standard English, no. You should use `Let's not`. However, you might hear `Let's don't` in some American dialects, but it is considered grammatically incorrect in exams and professional writing.
It is a tag question. Because `Let's` is a contraction of `Let us`, the corresponding auxiliary verb for the tag is `shall`. It makes the suggestion sound like a polite question.
Yes! Any action verb works. `Let's be`, `Let's have`, `Let's go`, `Let's study`. Just remember to use the base form.
It is a 'soft' command. It's more of a suggestion because it includes the speaker. It's much more polite than saying 'Go!' or 'Eat!'
You can say 'Yes, let's!' or 'Okay!' or 'I'd rather not.' If you agree, 'Let's!' is a perfect short answer.
No. Even in the negative, you must never use 'to'. It is always `Let's not go`.
Scaffolded Practice
1
2
3
4
Mastery Progress
Needs Practice
Improving
Strong
Mastered
In Other Languages
Vamos a + infinitive / Subjunctive
English uses a fixed particle 'Let's' while Spanish conjugates the verb.
First-person plural imperative (-ons)
French changes the verb ending; English uses 'Let's' + base verb.
Lass uns + infinitive
In German, the infinitive verb usually goes to the end of the sentence.
~mashou
Japanese has different levels of politeness for suggestions; 'Let's' is more versatile.
Hayya bina (هيا بنا)
Arabic is more idiomatic and often implies physical movement.
... ba (... 吧)
English 'Let's' comes at the start; Chinese 'ba' comes at the end.
Learning Path
Prerequisites
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