问一些高中英语问题,希望详细解答,谢谢!1. It is necessary that a college student should master at least a foreign language.为什么用 should master 不用masters?2. Whoever has helped to save the drowning girl is worth praising.为

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问一些高中英语问题,希望详细解答,谢谢!1.Itisnecessarythatacollegestudentshouldmasteratleastaforeignlanguage.为什么用should

问一些高中英语问题,希望详细解答,谢谢!1. It is necessary that a college student should master at least a foreign language.为什么用 should master 不用masters?2. Whoever has helped to save the drowning girl is worth praising.为
问一些高中英语问题,希望详细解答,谢谢!
1. It is necessary that a college student should master at least a foreign language.为什么用 should master 不用masters?
2. Whoever has helped to save the drowning girl is worth praising.为什么用whoever 不能用 The one?
3. I don't doubt that he will come.为什么用that不能用whether?
4. After what seemed like hours he came out with a bitter smile.这句话什么意思
5. She looked quite different from what she used to be.为什么用what不用who?
6. I want to be liked and loved for what I am inside.为什么不能用how?
7. It is by no means clear what the president can do to end the strike.为什么what不能用that替换,不能说can do to sth.吗?
8. It is not always easy for the public to see what use a new invention can be of to human life.这句话什么意思,还有what有什么作用
9. She may have missed the train, in which case, she won't arrive for another hour.为什么用in which,不用in that?
10. A lot of language learning, as has been discovered, is happening in the first year of life, so parents should talk much to their children during that period.为什么用as 不能用it或者which?

问一些高中英语问题,希望详细解答,谢谢!1. It is necessary that a college student should master at least a foreign language.为什么用 should master 不用masters?2. Whoever has helped to save the drowning girl is worth praising.为
1、should表示需要完成的事情,而不是普遍需要掌握的
2、whoever是强调了who 也可以使用who而who就与the one类似,你懂得、、、
3、因为是不怀疑的句子所以他是否来时肯定的回答,这是固定搭配要记得!
4、过了好像有几个小时他出来了带着苦笑.
5、无法解释,固定搭配
6、我的内心里的是 什么东西,不是怎么!
7、what president can do 是一个句子里的成分.用that就不能做主语或宾语.
8、对于公众来说不容易懂得一个新发明能够给人类带来什么作用.
9、in 是介词连which case,which是指这句话之前的事情,非限制性定语从句 只用which 你没认真看which 和that的使用规则哦.
10、which 也可以、、

不知道

it is necessary /strange/important... that 后面用虚拟语气,动词构成 should +do