内容正文:
Unit 13 We're trying to save the earth!
学霸错题再学再练再测
易错点一:cost,spend,take与pay的辨析
【例句】 The cost of a loaf of bread has increased five-fold.
一条面包的价钱增长了4倍。
By the end of the holiday I had spent all my money.
到假期结束时,我已经花光了自己所有的钱。
Accommodation is free — all you pay for is breakfast and dinner
住宿免费——你只需付早餐和正餐的钱。
【讲解】四者都有“花费”的意思,但用法是不同的。cost主语通常是物,常用于sth. cost(s) sb. some money句型中,意为“某物花费某人多少钱”;spend主语通常是人,常用于spend some money/time (in) doing sth. 结构中,意为“花费金钱/时间做某事”,也用于spend money/time on sth. 结构中,意为“在某方面花费金钱/时间”;take常用it作形式主语,常用于It takes/took sb. some time to do sth. 句型中,意为“做某事花费某人多长时间”;pay主语是人,常用于sb. pay(s)/paid some money for sth.句型中,意为“某人为某物花费多少钱”。
易错点二:the number of与a number of的辨析
【例句】The number of business failures has risen.企业倒闭的数量增加了。
Two significant constants have been found in a number of research studies.
若干研究已经发现了两个重要常量。
【讲解】the number of意为“……的数量”,后面接名词复数,谓语动词用单数形式;a number of意为“大量;许多”,相当于a lot of,后面接名词复数,谓语动词用复数形式。
易错点三:not only…but also…用法
【例句】She not only plays well, but also wr