1、Self Check 单元易错清【精讲】四者都有“花费”的意思，但用法不同。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sb.spend(s)/spent some money/time(in)doing sth.结构中，意为“某人花费金钱/时间做某事”，也用于sb.spend(s)/spent some money/time on sth.结构中，意为“某人在某方面花费金钱/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
2、，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”。【精练】()1.Do you often go online?Yes.I _ lots of time on it.Acost Bspend Ctake Dpay()2.Your new skirt looks very nice.How much is it?It _ me￥200.Acost BpaidCspent DaffordedBA()3.It will _ only about 50 minutes to travel f
3、rom Fuzhou to Mount Wuyi by highspeed railway.Atake Bspend Ccost Dpay4She spends an hour reading English every day.(改为同义句)It _ her an hour to _ English every day.5The new TV cost me 6，000 yuan.(改为同义句)I _ 6，000 yuan _ the new TV.Atakesreadfor/onpaid/spent【精讲】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 n
4、umber of意为“大量；许多；一些”，相当于a lot of，后面接名词复数，谓语动词用复数形式。【精练】()6.There _ a number of members in the Green Life Club.The number of them _ 30 now.Aare；are Bare；isCis；is Dis；areB()7.A number of tourists _ Dali many times because its such a beautiful city.Ahave gone to Bhas been toChave been to Dhas gone toC【
5、精讲】take part in意为“参加”，常指参加某项群体活动并在活动中发挥作用；join表示“参加，加入”，通常指参加或加入某个组织或社团，并成为其中一员；join in表示“参加”，后可接比赛、活动等名词。join sb.in(doing)sth.意为“和某人一起做某事”，其中“in(doing)sth.”可省略。【精练】()8.If John _ the sports meeting，he would win it for sure.Ajoined Bjoins inCtakes part in Dtook part in()9.My brother Jack _ the army for 5 years.Ahas joined Bhas joined inChas been in Dhas taken part inDC
