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when 后加主语是跟动词ing还是动词原形
please close the door and windows when _____the office.
A.leaving B.leave
When the gas ___very hot inside the rocket,it wil run out of the end of the rocket ,so it can make the rocket fly up into the sky.
A,become B.becomes C.became D.is becoming
We never let the lights on when _____the rooms.
A .leave B.leave
if 后跟动词一般现在时吗
人气:125 ℃ 时间:2019-10-19 17:30:12
解答
第一题应该是A,相当于when you are leaving,这是个祈使句,祈使句隐含的人称本身就是第二人称you,主语一致的情况下可以省略主语,把动词改成ing或者ed的形式,ing表示主语和动词之间主动,ed表示两者之间被动.第二题应该...我现在改了please close the door and windows when you _____the office.A.leavingB.leaveWhen the gas ___very hot inside the rocket,it wil run out of the end of the rocket ,so it can make the rocket fly up into the sky. A,become B.becomes C.becameD. is becomingWe never let the lights on when _____the rooms.A .leave B.leavingif 后跟动词一般现在时改了以后的第一题是B,when后面接从句,A单独的ing是不能表示时态的,第二题选B啊,貌似没改过,第三题选B,when后面直接接ing啊,表示主动,而且这个动作和前面的动作同时发生,要举一反三啊,这三个题目和买改过的道理都是一样的。
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