...分析的是否正确,谢谢!If they knew how difficult it was to drill through the hard rock , they would lose heart.从句是由if引导的与现在事实不符的非真实条件状语从句,在这个从句中包含了一个宾语从句(how difficult it was to drill through the hard ...
...ought was a
dangerous speed.A. as
B.which C. what D. that答案选what,
解释说的是能同时在主从句中做了两种成分的关系代词有what,
whatever, whoever, whomever, whichever等,所以选what。请问为什么不能选which呢?紧挨介词后面指物不是...
...用动名词。最典型的例句是:Seeing is believing. 眼见为实。To see is to believe. 眼见为实。但是,初中英语九年级Unit 15 (A doctor for animals) 有这样一句:To help animals is helping people. 帮助动物就是帮助人类。这句的主语是不定式,但表语...
She found it hard to sit still. 她觉得很难安坐在那里。She wandered round all morning, unable to sit still. 她一上午都在四处闲逛,坐不住。 He was unable to sit still for longer than a few
minutes. 他连几分钟都坐不住。上面句子中的 sit still 是什...
... ▲app▲application ▲take part in▲give way to ▲balance▲keep balance ▲lead to▲dam ▲proposal▲make a proposal ▲protest▲likely ▲turn to▲committee ▲Establish▲limit ...