Question

用所给动词的适当形式填空

joan often ---------- (catch)the no.11 bus to work .
tom often -----------(go)to school by bus.
----------your sister often------(go) shopping
what -----he ----(do) in 1990?he------(be)an office worker.
everyone in my family-----(be)busy now.but my brother ----(piay)with the cat.

Answer 1

1.catches Joan是 第三人称单数形式 所以要在动词后加--es或s，对catch而言，要加---es.
2.goes 原因同上，对go而言，也要加---es.
3.Does go 原因同上 因为有了does go要用原型。
4.did do was 很显然，这是一种过去时 所以要用过去时态 。
5.is is playing 很显然，这是现在进行时态，所以要用现在进行时。

以上几道题，主要考察我们对时态和动词形态的掌握，如果楼主掌握了这两点，以上几道题也就迎刃而解了，对于英语学习，希望楼主明白万变不离其宗的道理。

Answer 2

catches/goes/Does , go/did,do,was/is,is playing
一般现在时的第三人称单数He，She ，It这类词作主语时，谓语动词要+s/es,疑问句和否定句中要加入助动词does，同时谓语动词变回原形动词。
希望能帮到你啊！

追问

很想采纳你为最佳答案，但只能有一个。6楼的分析更好一点！

Answer 3

1 catches 动词的第三人称单数
2 goes 动词的第三人称单词
3 Does go 这是一个一般疑问句，
4 did do was
5 is is playing

Answer 4

1 catches
2 goes
3 Does , go
4 did , do , was
5 are , is playing

Answer 5

catches
goes
Does go
was doing was
are are playing

Answer 6

前面两位的答案基本没问题，可是everyone 的谓语是单数，一般老师总会问"Is everyone here?"