3) 将来完成时：
① 构成：shall / will + have +过去分词
② 语法意义及要点：
将来完成时表示某一动作在将来某一时刻或将来某一动作之前已经完成或发生。
--He will have graduated from high school before his next birthday.
--The shop will have closed already before you get there.
2. 哪些动词不能用于进行时
1) 表示状态的动词，如be, seem, appear, become, get等。
He is being a used-car dealer.(误)
He is a used-car dealer.(正)
She is seeming always about to smile.(误)
She seems always about to smile.(正)
2) 表示感官感觉的动词，如see(看见), hear(听见),feel(感觉出), taste(尝出),smell(闻到)等。
The medicine is tasting bitter. (误)
The medicine tastes bitter. (正)
I was seeing a car passing by our house. (误)
I saw a car passing by our house. (正)
3) 表示拥有的动词，如have, own, possess, belong, contain, hold等。
He is owning a luxurious car. (误)
He owns a luxurious car. (正)
The book is belonging to her. (误)
The book belongs to her.(正)
4) 表示思想状况、态度的动词，如believe, think, know, understand, agree, approve, consider, expect, forget, guess, hesitate, hope, imagine, mean, realize, remember, suppose, trust, want, wish等。
I’m thinking that he is right. (误)
I think that he is right. (正)
I’m understanding your feelings. (误)
I understand your feelings. (正)
责任编辑：sealion1986
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