since,when,while等引导时间状语从句时 直接引语变间接引语 时态怎样变化?
\u7531when\u5f15\u5bfc\u7684\u65f6\u95f4\u72b6\u8bed\u4ece\u53e5 \u65f6\u6001\u4e3b\u53e5\u5c06\u6765\u65f6\u4ece\u53e5\u7528\u4e00\u822c\u73b0\u5728\u65f6\uff0c\u7b80\u79f0\u4e3b\u5c06\u4ece\u73b0
Jennifer: Hello, Vicki. I haven\u2019t seen you for a long time.Vicki: Yeah, it\u2019s been so long. How have you been?Jennifer: I\u2019ve been all right. How time flies! Do you remember\uff1f
三句口诀:“主现从任、主过从过、主将从现。”
意思是说:
主句是现在时的话,从句随便你用什么时态。
比如:I‘ll tell her the good news when she comes back.
Don’t laugh at me when I make a mistake.(祈使句)
You should be quiet when you are in the library.(含情态动词)
主句是过去式的话,从句用四种过去时态中的一种(过去一般、过去进行、过去完成、过去将来)
比如:When he entered the room, I stopped eating.
When he entered the room, I was eating.
When he entered the room, I had been eating for five minuted.
When he entered the room, I would have finished eating.这个不太恰当,但你能理解就行。
主句是将来时的话,从句用现在时。
I will be a nurse when I grow up.
另外,since 引导时间状语从句时,其主句通常要用现在完成时,有时也用现在完成进行时。如:
She has had another baby since I saw her last. 从上次我见到她以来,她又生了一个孩子。
He has grown an inch since I saw him. 我上次见到他以后他已长高了一英寸。
注:当主句为“It + be + 一段时间”时,则通常用一般现在时代替现在完成时。如:
It’s more than three years now since I saw her last. 我们已有三年多没见面了。
一些特定句式的时态:
由no sooner. . . than, hardly [scarcely]…when引出的时间状语从句,其主句通常用过去完成时,从句通常用一般过去时。如:
Hardly had he arrived when she started complaining. 他刚到她就抱怨起来。
No sooner had he gone to sleep than the telephone rang. 他刚睡着电话铃就响了。
We had no sooner set out than a thunderstorm broke. 我们刚出发就下起一阵雷暴。
No sooner had she agreed to marry him than she started to have terrible doubts. 她刚同意嫁给他她就开始产生可怕的疑虑。
When you have finished your homework, I will give you 10 dollars.做完作业,我给你十美元作为奖励。
When he has come back, I have finished my homework.你到家的时候,我肯定已经完成家庭作业了。
不懂问我,希望对您有帮助,南无地藏菩萨!
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