“this”、“that”既可以作形容词,又可以作指示代词;而“it”只能作代词.one可用数词又可作代词.
指“物”
1.“this”指近物,“that”指远物,“it”没有远近之分.如:
This is a computer.这是一台电脑.(在近处)
That is a bike.那是一辆自行车.(在远处)
2.在回答“this”和“that”作主语的疑问句时,常用“it”代替“this”和“that”.如:
-Is this/that a car?这/那是一辆小汽车吗?
-Yes,it is./No,it isn′t.是的,它是./不,它不是.
-What′s this/that?这/那是什么?
-It′s a ruler.这/那是一把尺子.
3.陈述在一起的两样东西时,应先说“this”,后说“that”.如:
This is a book.That is a pen.这是一本书,那是一枝钢笔.
4.one与it的区别
one指代上文提到过的同类事物中的一个,但不是上文提到的那一个事物.如果指同类事物中的一些,要用ones.如:
This apple is small.Please give me a big one.
这个苹果小,请给我一个大的.
These books are mine.Those ones are Lily's.
这些书是我的,那些书是莉莉的.
it指代前文中提到过的那一个事物.如:
My bike is very old,but I like it very much.
我的自行车很旧,但我很喜欢它.
Where is my new pen?I can't find it.
我的新钢笔在哪儿?我找不到它了.
练一练:
1.---This is my dog,Spotty.
---Oh,________is very lovely.
2.I havn't a pen.Do you have_____.