1. it特指，代替前文提到過(guò)的事物慈俯。（同類同物）
如：He is eating a banana. It looks delicious.他正在吃香蕉豪墅，這香蕉看起來(lái)很美味纤泵。
? ? The baby is crying,it looks so sad.這個(gè)嬰兒正在哭泣吮便，它看起來(lái)如此傷心笔呀。
2. one泛指，代替單數(shù)名詞髓需，可指人或物许师。（同類異物）
如：I don’t like this book,I’d like a more interesting one.（one=book）我不喜歡這本書(shū)，我想要一本更有趣的僚匆。
I like the bananas,please give me one more.我喜歡香蕉枯跑，請(qǐng)?jiān)俳o我一個(gè)。
Among all people here,Tom is the most humorous one.這里所有人中白热，湯姆是最幽默的一個(gè)敛助。
3. ones泛指，代替復(fù)數(shù)名詞屋确，可指人或物纳击。
如：There were a few young people with some old ones in the house.（ones=people）有幾個(gè)年輕人和一些老年人在那座房子里。
4. that特指攻臀，代替不可數(shù)名詞或單數(shù)名詞焕数，指物。
如：The weather in Wuhan is hotter than that of Dongguan.（that = the weather）武漢的天氣比東莞的更熱刨啸。
5. those特指堡赔，代替復(fù)數(shù)名詞。
如：The machines are better than those we produced last year.（those=the machines=the ones）這些機(jī)器比我們?nèi)ツ晟a(chǎn)的要好设联。
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