Our teacher (not being able to come)(不能来）,we'dbetter put off the meeting这是一个什么样的句型?能不能用isn't coming进行时表将来时?It has been agreed that we'llhave to finish the work ,(however long it takes)（无论要花

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Our teacher (not being able to come)(不能来）,we'dbetter put off the meeting这是一个什么样的句型?能不能用isn't coming进行时表将来时?It has been agreed that we'llhave to finish the work ,(however long it takes)（无论要花
Our teacher (not being able to come)(不能来）,we'dbetter put off the meeting
这是一个什么样的句型?能不能用isn't coming进行时表将来时?
It has been agreed that we'llhave to finish the work ,(however long it takes)（无论要花多长时间）
为什么不用一般将来时呢?

Our teacher (not being able to come)(不能来）,we'dbetter put off the meeting这是一个什么样的句型?能不能用isn't coming进行时表将来时?It has been agreed that we'llhave to finish the work ,(however long it takes)（无论要花
1.这个结构叫做悬垂分词,因为逗号前分词的主语teacher和主句主语we不一样,所以属于悬垂分词里的独立主格结构.因为句子里面只能有一个谓语动词哦,而本句的谓语是“had better put off”,所以前面只能用分词结构,其实是把它名词化的一个手段.
用你说的进行时表将来时的话,就有了第二个谓语,句子结构就要改成：Our teacher isn't coming.We'd better put off the meeting.注意,这里就要独立成两句话了哦.或者用连词把两句话连接：Our teacher isn't coming so we'd better put off the meeting.
2.“however long it takes”是表示无论花多长时间的一个让步状语从句,是一个假设条件,没有过去未来的明确时间意义,所以用一般现在时就可以,因为强调的部分不是时间先后,而是一个永远成立的前提.
有问题欢迎继续留言,

第一个句子，是属于非谓语，因为剧中没有连词，所以，Our teacher (not being able to come)这部分不能出现动词，把be 转换成非谓语being的动名词，而你的isn't是谓语动词，如果加上because这个连词就可以了

第二个句子，however long it takes=no matter how,是条件状语从句，而条件状语从句时不能用将来时的...

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