Question

用括号中所给动词的正确形式填空，谢谢！

1.A great number of colleges and universities_____(set up) since 1949

2.English_______(speak) by lots of people in the world.
3.A neo road______(build)next year.
4.Two hundred trees________(plant)by now.
5.They said they ______(invite)to the party.
6.The children________(take care of)by their grandmother at he moment.
7.Metal_______(use)for making machines.
8.The work can_____(finish)in another two weeks.
最好给予解释，因为我不太懂。谢谢！满意+悬赏！

Answer 1

1.set up
2.spoken(被动语态)
3.will be built
4.have been planted(现在完成时5.have been invited6. be taken care of 7.is used for8.will be finish都是些被动语态情态动词后面＋be＋过去分词(pp)
1.should be +pp
2.must be +pp
3.can be +pp
另外have/ has/had
have/has/had +been +pp
还有进行时态
is/are +being +pp
还有过去式的
was+being +pp(过去进行时）
had +been +pp(过去完成时）
was +pp（一般过去时） 希望你能满意