John left Beijing three years ago.(用现在完成时改为同义句)John____ ____
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John left Beijing three years ago.(用现在完成时改为同义句)
John____ ____ ____ Beijing ____ three years.
I borrowed this book two weeks ago.(用现在完成时改为同义句)
I ___ ___ this book for two weeks.
The factory opened ten years ago.(用现在完成时改为同义句)
The factory ___ ___ ___ for ten years.
根据首字母提示补全所缺单词
There are so many beautiful skirts here that i can't decide which one to c____
顺便给我介绍一下现在完成时的用法,
has been away from for
have kept
has been open
choose
现在完成时用法
1.表示过去发生或已经完成的某一动作对现在造成的影响或结果.常用的时间状语:already,so far,never,just,before,recently,
I have lost my key.(说明过去某时丢的,现在还未找到.)
2.表示过去已经开始,持续到现在的动作或状态往往和表示一段时间的状语连用.for+一段时间,since+一段时间 How long..?
I have known him for ten years.
For 和since要用延续性动词leave/go- be away, come-be here/be in, buy- have, borrow-keep, join-be in/a member of, die-be dead, begin- be on, finish- be over
3.表示从过去某一时间到说话时这段时间中反复发生的动作,常用often, always, seldom, never等连用.注意与一般现在时的区别.
We have been to the Summer Palace twice.
4. 表示次数.
5. Have been to /have gone to
6. 经典句子I haven’ t seen you for a long time. Where have you been? I have been to Shanghai. How many times have you been there? I have been there twice
7. 现在完成时与一般过去时的区别
1)侧重点不同:现在完成时侧重于过去的动作对现在造成的影响,而一般过去时侧重于表示过去的动作与现在无关.
2)连用的时间状语不同.
3)询问某事过去发生的具体时间,地点时必须用一般过去时.现在完成时不可与表示过去的时间状语连用.
8. 现在完成时需要注意的几点
1)由since引导的时间状语从句主句通常用现在完成时.
2)句型It is/ has been+ 时间段 + since
3)表示某人所作过的用This is the…. that….结构,后面的句子要用完成时.
This is the first time that I have been here.
4)非延续性动词的否定形式可以表示状态的延续.可与for, since连用.
5) age /before的区别
ago为副词,表示从现在算起的过去某时间以前,用于名词词组 + ago . ago所在句子的谓语动词一般为过去时,它不可以单独使用,也不可以用做连词.
before为副词时,表示从过去的某一时刻或某一事件算起的过去某时间以前,用现在完成时.它还可以单独使用,也可以用做连词,此时后接单词,词组或句子.
希望有用
have kept
has been open
choose
现在完成时用法
1.表示过去发生或已经完成的某一动作对现在造成的影响或结果.常用的时间状语:already,so far,never,just,before,recently,
I have lost my key.(说明过去某时丢的,现在还未找到.)
2.表示过去已经开始,持续到现在的动作或状态往往和表示一段时间的状语连用.for+一段时间,since+一段时间 How long..?
I have known him for ten years.
For 和since要用延续性动词leave/go- be away, come-be here/be in, buy- have, borrow-keep, join-be in/a member of, die-be dead, begin- be on, finish- be over
3.表示从过去某一时间到说话时这段时间中反复发生的动作,常用often, always, seldom, never等连用.注意与一般现在时的区别.
We have been to the Summer Palace twice.
4. 表示次数.
5. Have been to /have gone to
6. 经典句子I haven’ t seen you for a long time. Where have you been? I have been to Shanghai. How many times have you been there? I have been there twice
7. 现在完成时与一般过去时的区别
1)侧重点不同:现在完成时侧重于过去的动作对现在造成的影响,而一般过去时侧重于表示过去的动作与现在无关.
2)连用的时间状语不同.
3)询问某事过去发生的具体时间,地点时必须用一般过去时.现在完成时不可与表示过去的时间状语连用.
8. 现在完成时需要注意的几点
1)由since引导的时间状语从句主句通常用现在完成时.
2)句型It is/ has been+ 时间段 + since
3)表示某人所作过的用This is the…. that….结构,后面的句子要用完成时.
This is the first time that I have been here.
4)非延续性动词的否定形式可以表示状态的延续.可与for, since连用.
5) age /before的区别
ago为副词,表示从现在算起的过去某时间以前,用于名词词组 + ago . ago所在句子的谓语动词一般为过去时,它不可以单独使用,也不可以用做连词.
before为副词时,表示从过去的某一时刻或某一事件算起的过去某时间以前,用现在完成时.它还可以单独使用,也可以用做连词,此时后接单词,词组或句子.
希望有用
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