我有两本书。
I have two books.
Mandarin words that are easy to confuse
Some words share an English gloss but do different jobs in a sentence. These are common patterns, not rigid one-word translations; the surrounding context still matters.
二 and 两 both relate to two
二 appears when counting or naming a number, as in 一、二、三 and 二号. 两 commonly expresses a quantity before a measure word, as in 两本书. Some everyday expressions have their own conventions, including 两点 for two o’clock.
会, 能, and 可以 overlap
会 often points to a learned skill or what is likely to happen. 能 often focuses on ability or whether circumstances allow an action. 可以 often expresses permission or that an action is possible. In real sentences these meanings can overlap, so use the examples as a first guide.
知道 and 认识 focus on different kinds of knowing
知道 commonly introduces information or a fact: 我知道他的名字 (I know his name). 认识 often means being acquainted with a person or recognizing a character or thing: 我认识王老师 (I know Ms. Wang).
再 and 又 often place repetition at different times
再 commonly points to another action that is still to come: 我们明天再说 (Let’s talk again tomorrow). 又 commonly marks a repeated action that has already happened: 他昨天来了，今天又来了 (He came yesterday and came again today).
Examples
他住在二号房间。
He lives in room number two.
我知道他的名字。
I know his name.
我认识王老师。
I know Ms. Wang.
我会说中文。
I can speak Chinese.
我今天能去学校。
I can go to school today.
我可以进来吗？
May I come in?
我们明天再说。
Let’s talk again tomorrow.
他昨天来了，今天又来了。
He came yesterday and came again today.
Check what you remember
Which word is natural for asking permission in “___进来吗？” (May I come in?)
- 可以
- 又
He came yesterday and has come again today. Which word marks the repeated past action?
- 再
- 又
Show answers and explanations
- 可以. 可以 can ask whether an action is allowed or possible.
- 又. 又 often marks a repeated action that has already occurred.