22.What's the population of ...? ...人口有多少？　　 不说How much population in...?形容人口数量的大用large　　 eg.The population of China is ten times as large as that of the USA

21.⑴ too…形容词(副词)+to…"太…而不能" "太…以致于不"

eg.①The basket is too heavy for me to carry. 这篮子太重我拿不动。 　②This colour TV is too expensive for us to buy. 这台彩电对我们来说太贵了，买不起。

⑵so...that 如此...以致于...上面的too...to结构的句子，可以换成so...that 引导的句子转换。①The basket is so heavy that I can't carry it.　　　 ②This colour TV is so expensive that we can't afford it.　　　　　　　　　 　　

19.sb.pay 钱 for 物 某物化费了某人多少钱=sb.spend 钱 on 物　 =物 cost sb.钱 , pay的过去式为paid 而不是payed.　　 eg.I paid thirty yuan for the coat.　 =I spent thirty yuan on the coat.

　 =The coat cost me thirty yuan. 20.have been to 某人曾去过某地,现在人不在那儿

sb.have been in +地点 某人呆在某地(一段时间)　　　 have gone to 某人已去某地,人不在这儿

18.It takes sb. some time to do sth.(干某事化费某人多少时间) =sb.spend some time on sth. (in) doing sth.eg.It took me half an hour to do the work.

=I spent half anhourin doing the work.

17.It is good (nice)of+宾格+to do sth.

eg.It is very good of you to teach me English. (你教我英语真是太好了)

16.had better do sth.最好干某事.否定:had better not do sth.

特别注意:had better后面跟be动词词组,不可漏掉be.eg.You'd better catch a train.

You'd better not talk in class.You'd better not be late for the class.

14.I don't think+肯定句 我想...不　 eg.I don't think I'll take it. (我想我不买它了)

eg. I prefer fish to chicken.= I like fish better than chicken

13.find it +形容词+to do eg.I find it useful to learn English well. (我发觉学好英语是很有用的)

　 find +宾语 +名词eg.I find him a good boy. (我发现他是个好男孩.)

　 find +宾语 +形容词

eg.I find the door open/closed. (我发现门开/关着)　 I find our bags filled with/full of presents. (我发现我们的包装满了礼物)

12.one of +最高级+复数 最...之一eg.Miss Zhao is one of the most popular teachers.

11.What...for?为何目的？为什么？eg.What do you want a science lab for?=Why do you want a science lab?