用所给词的正确形式填空。
1.I think there _____(be) fewer trees next year.
2.He _____ (collect) 300 pictures since 5 years ago.
3.Sam always _____(help) his classmates.
4.Would you mind _____ (play)the games after school?
5.My father came into the bedroom while I ____ (dance)
6.American fast food seems_______ (be) the most popular in the world.
7.My mother made me ______(clean) my room all by myself yesterday.
【答案】
1. will be 解析:句末明显的时间标志,next year,应该用一般将来时,will+动词原形。
2. has collected 解析:这是现在完成时很经典的句子,由since引导时间状语或是时间状语从句。更常考的是,since加过去时的句子,主句用现在完成时的情况,比如说:He has lived China for 4 years sice he moved here in 2005.
3. helps 解析:本题有标志词always,用一般现在是,要注意主语是第三人称单数,动词要用单三形式。
4. playing 解析:would you mind +doing sth,动词的这类用法需要不断积累和归纳。
5. was dancing 解析:本题中的状语从句由while引导,强调的是同时性,应该用进行时,由于主句中用了过去时态,后文应对应的使用过去进行时。
6. to be 解析:固定用法,seem to,好像—后面直接跟动词原形。
7. clean 解析:本题考查使役动词make的用法,make sb do sth。更有难度一点的题应该是考查使役动词的被动态,应该是be made to do sth.