写出下列动词的第三人称单数,现在分词和过去式1.become2.begin3.give4.think5.teach6.catch7.take8.know9.tell10.fall11.fly12.cost13.keep14.hurt15.write16.stop17.study18.chat
问题描述：
写出下列动词的第三人称单数,现在分词和过去式
1.become
2.begin
3.give
4.think
5.teach
6.catch
7.take
8.know
9.tell
10.fall
11.fly
12.cost
13.keep
14.hurt
15.write
16.stop
17.study
18.chat
答
1.become becomes becoming became2.begin begins beginning began3.give gives giving gave 4.think thinks thinking thought5.teach teaches teaching taught 6.catch catches catching caught7.take takes taking...