关于"All you can do is listen to the radio and smoke too much."中:为什么是"listen",而不是"listening"或者是"to listen".

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关于"All you can do is listen to the radio and smoke too much."中:为什么是"listen",而不是"listening"或者是"to listen".
关于"All you can do is listen to the radio and smoke too much."中:
为什么是"listen",而不是"listening"或者是"to listen".

关于"All you can do is listen to the radio and smoke too much."中:为什么是"listen",而不是"listening"或者是"to listen".
1)英语语法规定:如果用不定式结构做句子表语,且其前有行为动词do或其变化形式did/does/done的时候,这时必须省略不定式符合to.
这一规定简而言之即是:前有do,后无to.
此语法现象比较常见,也是考试中经常考查内容.
2)再如:What I can do now is (to) wait here.
All you need to do is (to) fill in the form.
3)二楼也很细心:不定式并列时,一般第二个to也会省略,即and smoke too much = and (to) smoke too much.