问题 that is why we don't do it的句子成分

Four years of closeness and sharing at the end of which she ripped your heart out, and that is why we don't do it!请问老师：怎么划分前半句的句子成分？

问题 come and see me whenever it is convenient.这句话主语是谁

Come and see me whenever it is convenient to you. 这句话主语是you吗？上面句子没有主语感觉很怪，不知道有没有语法错误?求助

问题 为什么it 和 a waste of time 直接放在一起(中间中间是否要加个is)

I find it a waste of time spending so much money on this case.这个例句，为什么it 和 a waste of time 直接放在一起?这是什么用法?不应该中间加个is吗？

话题 it is +adj. +(for/of+sb.)+to do sth.

问题 as/than从句的主语省略和补全问题

...）The effects on San Francisco were much less than would've occurred with the same earthquake at a closer distance .The result will be less effective than would be achieved by a teacher in harmony with the unit. =than what would be achieved by a teacher in harmony with the unit.(这里是...

问题 the more...the more...句式的还原

The more clear the goal is, the easier it is to focus on it and to track a path towards it.请问这句话是不是可以还原成 it is easier to focus on... 即 it is easier to focus on it 中的第一个 it 是做形式主语，而第二个 it 指代 goal。不知道 the more...the more...这种...

问题 It is the key to open the box with（为什么with后置）

It is the key to open the box with.with在里面起到什么作用，为什么后置?

问题 it is +adj. +(for/of+sb.)+to do sth.

It's wrong of you to take shelter under the tree in the storm.问：语法上讲，it is +adj. +(for/of+sb.)+to do sth.  ，此句型中到底何时用for 何时用of  取决于其前的形容词，若此形容词是表示人的属性的可以用来修饰人的，比如：kind , clever 时用of sb...

问题 as引导的从句省略问题

...比较对应项是都省略的问题In sport, [as in everything else], attitude is all important.这句话书中给了解释We understand “as it is in everything else”，但是实际上应该是不能出现it的吧。Kim won convincingly, [as usual ]，这个我理解是Kim won convincingly, [as...

问题 It is difficult for sb to do sth中的for sb是什么成分

It is difficult for us to finish writing 中的 for us 作什么成分？

问题 ​关于it is adj for sb to do sth句型的主语问题

以前学it is adj for sb to do sth句型时，老师说真正主语是不定式，但是查阅后发现不定式+for sb结构可以构成不定式复合结构，所以到底是不定式还是不定式复合结构作主语？？？

问题 代词It做主语

... characteristics might help you to decide what is and what is not a robot. It will also help you to decide what you will need to build into a machine before it can be considered as a robot.老师：黑体字句子的前面有与其结构相似的的并列句（These characteristics might help you to...

问题 It is not enough to just get good grades at school.

It is not enough to just get good grades at school.怎么翻译呢？是翻译成在学校只是获得好的分数是不够的。还是只是在学校获得好的分数是不够的。

问题 ills 应该译为“疾病”还是“困难”

Science and technology would cure all the ills of humanity, leading to lives of fulfilment and opportunity for all.请问这里的 all the ills 应该译为“所有的疾病”，还是“所有的困难”？谢谢老师！

文章 高中英语新课标词汇-教学参考资料-improve

...she reads everything she can get hold of concerning music, and takes every opportunity to improve herself. 作为一名草根歌手，她读她能找到的一切与音乐有关的东西，同时还利用一切机会提高自己。(2014福建卷单选)3. 表达习惯improve表示“改善”“改进...