Formal:
* 他们 (tāmen): This is the most common and neutral way to say "they" in Chinese. It's suitable for most situations, including formal settings.
Informal:
* 他 (tā) 们: This is the simplified form of "他们," and it's used in more casual contexts.
Other options:
* 那些人 (nàxiē rén): This means "those people" and can be used when referring to a specific group of people.
* 他们俩 (tāmen liǎ): This means "the two of them" and is used specifically when referring to two people.
Example sentences:
* 他们正在吃饭。 (Tāmen zhèngzài chīfàn.) - They are eating.
* 他 (tā) 们喜欢玩游戏。 (Tā men xǐhuan wán yóuxì.) - They like to play games.
* 那些人都在那里。 (Nàxiē rén dōu zài nàli.) - Those people are all there.
* 他们俩是朋友。 (Tāmen liǎ shì péngyou.) - The two of them are friends.
The best translation for "they" will depend on the specific situation and the level of formality you need.