取引する

Both 取引する (torihikisuru) and 商売する (shoubaisuru) relate to business, but they have slightly different nuances. 取引する generally focuses on the act of transacting or dealing with someone, often implying a specific business deal or relationship. For example, 「あの会社と取引しています」 (Ano kaisha to torihiki shite imasu) means 'I'm doing business with that company' or 'We have dealings with that company'.

商売する, on the other hand, often refers to running a business in general, or making a living through a commercial activity. It can have a broader sense of operating a shop or enterprise. For example, 「彼は飲食店を商売している」 (Kare wa inshokuten o shoubai shite iru) means 'He runs a restaurant business'.

No, 取引する is typically used for formal or commercial dealings. For informal exchanges like trading cards with a friend, you'd be more likely to use words like 交換する (koukansuru - to exchange) or やり取りする (yaritorisuru - to interact, to exchange). 取引する carries a sense of business or professional transaction.

Since 取引する is a する verb (suru verb), it conjugates like other する verbs. The past tense (ta-form) is 取引した (torihiki shita). For example, 「昨日、その会社と取引した」 (Kinou, sono kaisha to torihiki shita) means 'Yesterday, I did business with that company'.

A polite way to say 'we want to do business with you' would be 「御社と取引させていただきたいと考えております」 (Onsha to torihiki sasete itadakitai to kangaete orimasu). This uses humble language (させていただきたい) and polite verb endings (おります) to show respect.

取引する can be used by both large and small businesses. It simply refers to the act of conducting commercial dealings, regardless of the size of the entities involved. As long as it's a business transaction, 取引する is appropriate.

A common noun that goes with 取引する is 取引先 (torihikisaki), which means 'business partner' or 'client'. For example, 「新しい取引先を見つけた」 (Atarashii torihikisaki o mitsuketa) means 'I found a new business partner'.

While business dealings often involve negotiation, 取引する itself doesn't directly mean 'to negotiate'. It refers to the act of doing business or transacting. If you want to specifically say 'to negotiate', you would use 交渉する (koushousuru). However, when you 'do business' (取引する), negotiation is often part of the process.

One common phrase is 「取引を始める」 (torihiki o hajimeru) - to start business dealings, and 「取引を停止する」 (torihiki o teishi suru) - to stop business dealings. These are straightforward and frequently used in business contexts.

取引する broadly means to conduct commercial dealings, which can include more than just buying and selling. It can encompass various forms of business relationships like partnerships, contracts, services, etc., where there's a commercial exchange or agreement between parties.

The plain form of 取引する (torihikisuru) is simply 取引する (torihikisuru). It's a する verb, so the dictionary form (plain present/future affirmative) is the same as the verb itself.