1.the river smells terrible.people must ( )dirty things into it.A.be stopped to throwB.be stopped (from) throwing.[我记不到原题是不是有from,我问的是语法.把这个打出来希望有帮助]C.stop to throwD.stop from throwing2.not ...eno

Question

1.the river smells terrible.people must ( )dirty things into it.
A.be stopped to throw
B.be stopped (from) throwing.[我记不到原题是不是有from,我问的是语法.把这个打出来希望有帮助]
C.stop to throw
D.stop from throwing
2.not ...enough [for sb] to do sth是固定搭配吗?
是不是可以用of sb?关于两个的具体用法呢?
3.unless用法和if ...not...完全一样吗?
速求!请详尽明了,选什么,不选什么的原因,用到的语法都请告诉我,..
1.那为什么不能用be stopped doing sth 或stop from doing sth？
2、表示1楼同胞您说的那个人的本性是OF SB。我问的是某人不足够做某事的用法啊。
3.难道you will be tired if you don't sleep.和
you will be tired unless you sleep

Answer 1

1.选D.因为这句话的意思是：这条河闻起来太难闻了.人们必须停止往河里扔脏东西了.stop sb.from doing sth.的意思是：制止某人不做某事.被动语态是sb.be stopped from doing sth意思是：某人被强迫不做某事.stop
doing sth.停止做某事.在本句话中人们完全可以通过认识不再做某事了,就不需要被动语态了.
2.It is not ...enough [for sb] to do sth是固定用法.意思是：..对sb来说不够...做.It isn't old enough for you to work.你的年纪太小还不能工作.
类似的还有：It is （not）adj for sb to do sth.
这里的adj不能形容sb,可以形容后面的事情
eg It is （not）difficult for me to answer the question.
It is（not） adj of sb to do sth.
adj用来形容sb
It is （not）kind of you to help me.(you are kind~)
3.unless和if ...not...的用法不完全一样.因为虽然他们的意思接近但是用法不同具体如下：
I will agree with you unless you learn harder.
我将满足你的要求除非你以后更加努力学习.
I will agree with you if you don't play longer any more.我将满足你的要求除非你将不再玩太长时间了.