...后面有from吗?就是把一个过去时改为现在完成时,left变成away加...
has been away是要加from的，但是如果后面跟的是home旧可以不加from，如果是其他的名词一般是要加from的 例。He has been away from school for 5 years。 他毕业有5年了。 =He left school 5 years ago。他五年前毕的业。 因为leave 是分延续性动词所以转换成一般过去式 希望采纳 ...
关于英语时态现在完成时的问题。详见问题补充。
说明:现在完成时构成否定句时,只需在助动词have /has后面加not就行。have not,has not的缩略式分别为haven't ,hasn't。另外,肯定句中有some,already时,改为否定时要分别改成any,yet。实例: 1)I haven't finished my homework yet.我还没有完成我的作业。 2)She hasn't travelled on a train .她没有...
have been away from和have left的区别
回答：have been away from是系表结构，表示状态，可以跟一段时间状语连用；have left虽然跟前者意思相同，但动词leave（left的原形）是非延续性动词，不能跟一段时间状语（否定句除外）。如：They have left / have been from China.We have been away from （不能用 have left）China for two ye...
学好英语是这样的么? 帮帮忙了,十分感激!!50分
6)含come的短语有:came into 进来, come down 下来, come in 进来, come over 过来,come from 来自, come back 回来, come round 前来(过来)/ comes over, come on 快,加油, come out (花)开;出来, come along 赶快,快一点 7)含turn的短语有:turn off 关上, turn, up (把收音机等)开大一些,...
时态帮忙区分下
当然从句或主句中发生在前面的动作也可以用过去完成时,另一个发生在后面的动作则用一般过去时。E.g.(1)After I finished/ had finished my homework, I went to bed last night.(2)Before I arrived the station , the train left/had left.8、常用一般过去时的结构:(1)Why didn’t you(I)think of ...
英语的现在完成时和过去完成时还有将来完成时的组成..
英语中的现在/过去/将来完成时分别是由have/had/will have加上动词的过去分词组成。例如：I have done the job. 我已经做完这项工作了。（现在完成时）I had seen him since I was 5. 我5岁的时候就见过他了。（过去完成时）I will have been graduated at this time next year. 明年这个时候...
把一个一般过去时的英语句子改为现在完成时!!!
这laughed和didn't answer，这两个动作没有明显的先后顺序，用现在完成时不妥。或许是 He laughed,but hasn't answer my pusetion.
过去完成时和现在完成时的用法?
leave, move → be away, be out of 使用过去完成时应该注意：如果两个动作紧接着发生,则常常不用过去完成时.例如：When she came into the room, she found them sitting together singing.她进屋时看见他们坐在一起唱歌.After we said good-bye to our friends, we left the village.在和朋友...
has left 和 has been away from
away 都表示离开 都用于现在完成时 可have left 是非延续性动词，也就是不能与时间搭配，而have been away 是可延续性动词，可以与时间搭配 举个例子：He has already left.他已经离开了。He has been away for an hour.他离开了一个小时。这里的has left是一个瞬时动作，而has been away是一种...
如何区分现在完成时和过去完成时如:——(迷失在山中一个星期),the tw...
注意：当表示一段时间 ，现在完成时和过去完成时都可以用for 或since引导的 状语。 例如：Have you had your lunch yet? 你吃午饭了吗？ Yes, I have . I’ve just had it. 是的 ，我刚吃完。 I have had a clock now. 我现在有一个闹钟了。 Have you already posted the photos?
