---Do you know when Dr White ___for dinner this evening ---But I think he ____when he is free .A、will come ,comes B、will come ,will come请注明正确答案,一定要细

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---Do you know when Dr White ___for dinner this evening ---But I think he ____when he is free .A、will come ,comes B、will come ,will come请注明正确答案,一定要细
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---Do you know when Dr White ___for dinner this evening ---But I think he ____when he is free .A、will come ,comes B、will come ,will come请注明正确答案,一定要细
---Do you know when Dr White ___for dinner this evening
---But I think he ____when he is free .
A、will come ,comes
B、will come ,will come
请注明正确答案,一定要细

---Do you know when Dr White ___for dinner this evening ---But I think he ____when he is free .A、will come ,comes B、will come ,will come请注明正确答案,一定要细
B
第一个when为关系副词,译为“什么时候”引导的是宾语从句
宾语从句的习题时涉及到一个主从句时态呼应的问题.
1、主句为现在时,从句可以用任何所需时态.
--Do you know when Dr White ___for dinner this evening .你知道怀特博士(医生)今晚什么时候来吃晚饭吗?(今晚还未到,故从句用一般将来时.)
2、主句为过去时从句就要用相应的过去的某种时态.
但是有几个不变的.
(1)客观真理不变
Miss Li said the earth goes around the earth.李老师说地球绕着太阳转.
(2)格言、谚语、警句不变
Miss Li said to see is to believe.李老师说眼见为实.
(3)与现在事实相符合的不变
Miss Li said Hu Jintao is our chairman.李老师说胡锦涛是我们的主席.
第二个when是连词,译为“当---时候”引导时间状语从句,这又涉及到了时间状语从句主从句时态呼应的问题.
当主句是祈使句、一般将来时以及含有can等情态动词时,when/after/before/as soon as/not---until引导的时间状语从句以及if/unless等引导的条件状语从句要用一般现在时.
---But I think he ____when he is free .
But I think 是主句,故其后的宾语从句可用任何所需时态,根据句意,要用一般将来时.而在这个宾语从句当中又包含了一个when引导的时间状语从句.he will come when he is free.he will come 是主句,when是从句,主句将来时,从句现在时.

B
第一个是宾语从句,用将来时态
第二个是状语从句的主句,也用将来时态

B
this evening 是将来时,然后因为是宾语从句所以用陈述语序,
但是因为两个选项的第一个空的答案是一样的,所以可以只看第二个空
第二句是主将从现,所以选B

B
宾语从句,用将来时态,也用将来时态

A宾语从句一般用一般现在式

B
§时间状语从句(adverbial clause of time)
1.由when, while, as引导的时间状语从句。例如:
When you think you know nothing, then you begin to know something.当你以为自己一无所知的时候,你就是在开始知道一些事物了。
When truth is bur...

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B
§时间状语从句(adverbial clause of time)
1.由when, while, as引导的时间状语从句。例如:
When you think you know nothing, then you begin to know something.当你以为自己一无所知的时候,你就是在开始知道一些事物了。
When truth is buried under the ground it grows, it chokes, it gathers such an explosive force that on the day it bursts out , it blows up everything with it.当真理被埋在地下的时候,它在生长,它感到压抑,它蓄存着这么一种爆炸性力量,一旦冒出,它就会炸破一切!
Strike while the iron is hot. 趁热打铁。
Will you watch my clothes while I have a swim. 我游泳的时候,请你照看一下我的衣服。
You can feel the air moving as your hand pushes through it. 当你的手在空气中挥动的时候,你就能感觉到空气在流动。
Our headmaster laughed as she spoke.我们的校长边谈边笑

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B

B