that/ðæt/

a. used to talk about sb/sth that is being shown, pointed to or mentioned

pron.

➊ used as the subject or object of a verb to talk about sb/sth that is being shown, pointed to or mentioned

➋ used as a relative pronoun to introduce a clause

conj. used after some verbs, adjectives and nouns to introduce a clause

ad. used to say how big, how much, etc., esp. as you show it with your hands

a. 〖复those〗那，那个：That boy is Jack. 那个男孩是杰克。

◇Do you like this one or that one? 你喜欢这个还是那个？

◇Those houses are new. 那些房子是新的。

◇She was not at home that afternoon. 那天下午她不在家。

pron.

➊ 那，那个：Hello, is that Mike? 喂，是迈克吗？

◇That's an interesting story. 那是个有趣的故事。

◇He didn't say anything like that. 他未说过那样的话。

◇Those are my friends. 那些是我的朋友。

➋ [用作关系代词，引导定语从句]：He is the man that helped me. 他就是帮助过我的那个人。

◇The movie that we watched yesterday is exciting. 我们昨天看的那场电影很刺激。

conj. [引导宾语从句等]：He said that I was wrong. 他说我错了。

◇The reason for her absence is that she is ill. 她缺席的原因是她生病了。

◇I'm afraid that we'll be late. 恐怕我们会迟到了。

◇They overlooked the fact that we made progress. 他们忽视了我们取得了进步这个事实。

ad. 那么：The fish he caught was that big. 他抓到的鱼有那么长。

so ... (that) ... so

音组-at/-æt/

bat; cat; fat; flat; hat; mat; rat; sat; that

常犯错误

✗ The air in the country is much better than one in the city.

✓ The air in the country is much better than that in the city. 乡间的空气比城市的要好得多。

[✌one代替a/an +可数名词单数。that 指代the + 可数名词单数/不可数名词，是特指；that后面有介词短语或定语从句等修饰成分]

常犯错误

✗ London, that I visited last month, is the capital of the UK.

✓ London, which I visited last month, is the capital of the UK. 伦敦是英国首都，上个月我去了那儿。

[✌that不能引导非限制性定语从句]