现在完成时的否定句和一般疑问句5个一般疑问句,5个否定句,

完成时一般疑问句的构成:
Have/Has/Had + 主语（you,he,she等）+ v.过去分词 + 宾语 + （某些用于完成时的副词）
For example:Have you finished you homework yet?
2.现在完成时否定句的构成:
主语 + haven't/hasn't/hadn't + v.过去分词 + 宾语 + （某些用于完成时的副词）
For example:I haven't cleaned my room.
3.总结already和yet的用法:
already和yet都可用于现在完成时.
但already通常用在肯定句中;
而yet通常用在疑问句或否定句中.
(需要注意的是：yet一般不会出现在过去完成时中.如果你对过去完成时不太了解的话,建议你去百科查询)
6

Have you finished your homework?
Have you finished your dinner?
Have you had an exam?
Has she cleaned the floor?
Have you fed the cat yet?
I haven't cleaned my room.
I haven't done my homework.
I haven't read the book.
I haven't had my dinner
I haven't done this