作业帮英语高手进,关于现在完成时的几个问题.
来源：学生作业帮 编辑：拍题作业网作业帮 分类：英语作业 时间：2024/04/30 22:59:31
英语高手进,关于现在完成时的几个问题.
1I have lost the pen which I bought the day before.为什么不能说成
I lost the pen which I have bought the day before.
2 By next sunday she will have stayed with us for three weeks.这句中的will have stayed 怎么解释和运用,为什么不能说成will stayed.
3 I felt much better after I had took the medicine.这句中的had
took 为什么不能用一般过去时took
4 He'll go out when he has done with this book.这句中为什么用现在完成时,而不用一般现在时代替将来时.
若能答疑 感激不尽.谢过.
纠正一下2中最后一句应该是will stay
sorry
.........
1I have lost the pen which I bought the day before.为什么不能说成
I lost the pen which I have bought the day before.
2 By next sunday she will have stayed with us for three weeks.这句中的will have stayed 怎么解释和运用,为什么不能说成will stayed.
3 I felt much better after I had took the medicine.这句中的had
took 为什么不能用一般过去时took
4 He'll go out when he has done with this book.这句中为什么用现在完成时,而不用一般现在时代替将来时.
若能答疑 感激不尽.谢过.
纠正一下2中最后一句应该是will stay
sorry
.........
1.现在完成时主要表示与现在有关的事 I have lost the pen (所以我现在别的笔写了或者我现在没笔可写了）如果说I lost the pen主要是讲某一时刻的事,主要用于叙述.比如I lost the pen yesterday.（我昨天把笔给丢了）
2.will 后直接加动词原形,will stayed 显然是错误的.will 表示将会发生的事,比如说:She will do it by herself.（她会自己做的）如果表示到某个时间会做完某件事 will后面就加完成时 正如你例句中的 By next sunday she will have stayed with us for three weeks.到下个星期天为止她会和我们算起来已经一起待了3个星期
3.句子错误 应该是I felt much better after I had taken the medicine.一样的道理,表示吃下药后好多了.I felt much better after I took the medicine也是正确的.
4.一般现在时表示一个经常做的事比如I go to school every day.所以这句话要用一般现在时的话应该：He goes out when he does with this book.这样他完成这本书然后出门就是他的一种习惯,是对他一种日常生活的描写.而He'll go out when he has done with this book是指等他完成这本书他将会出门,表示的是将来发生的事
2.will 后直接加动词原形,will stayed 显然是错误的.will 表示将会发生的事,比如说:She will do it by herself.（她会自己做的）如果表示到某个时间会做完某件事 will后面就加完成时 正如你例句中的 By next sunday she will have stayed with us for three weeks.到下个星期天为止她会和我们算起来已经一起待了3个星期
3.句子错误 应该是I felt much better after I had taken the medicine.一样的道理,表示吃下药后好多了.I felt much better after I took the medicine也是正确的.
4.一般现在时表示一个经常做的事比如I go to school every day.所以这句话要用一般现在时的话应该：He goes out when he does with this book.这样他完成这本书然后出门就是他的一种习惯,是对他一种日常生活的描写.而He'll go out when he has done with this book是指等他完成这本书他将会出门,表示的是将来发生的事