They ________(not play)football for months1,They ________(not play)football for months2,I__________(visit)this park before.3,____________you ever________(see)this film?4,We___________never________(do) so much homework5,You__________(not clean) the classroom6,we _________just(come) here.
They ________(not play)football for months
1,They ________(not play)football for months
2,I__________(visit)this park before.
3,____________you ever________(see)this film?
4,We___________never________(do) so much homework
5,You__________(not clean) the classroom
6,we _________just(come) here.
haven't played
have visited
Have seen
have done
haven't cleaned
came 注释：一般在陈述句中有for,before,already出现的就要用完成时。疑问句中有ever的也是。第5，6句需要翻译.
（不过同学，我建议你在上课时要好好听讲，这东东一言难尽啊！这是最基本的语法题了。有问题也最好是当面问老师。）
haven't played
have visited
Have seen
have done
haven't cleaned
came
应该是这样的
haven't played
visited
Have seen
have done
didn't clean
come
1. They haven't played football for months [现在完成时]
2. I have visited this park before.[一般过去时,对现在造成影响]
3. Have you ever seen this film? [现在完成时]
4. We have never done so much homework [现在完成时]
5. You haven't cleaned the classroom [现在完成时]
6. We have just been in here. [现在完成时]
1.haven't play解析:后面有for months.表示持续了一点时间,所以要用现在完成时2.visited解析：before表示已经发生过了,要用过去式3.Have seen解析：ever4.have done解析：never表示从过去到现在,是持续状态,用现在完...
haven't played
have visited
Have seen
have done
didn't clean 没有明确的时间状语
came