1 we couldn't work out the problem without her help.

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1 we couldn't work out the problem without her help.
改为：we couldn't work out the problem ___ she ___ help us.
填：if she didn't help us.可是IF引导的条件状语从句应该是主将从现.
2 this is a photo of ___(i) i will tell you a story about it.
不是说“a photo of mine
3 a friend of ___是填US 还是OURS.为什么?
4 mary has come back,but ____ students haven't.
a other b the other c the others d others
选几,为什么

1 we couldn't work out the problem without her help.
改为：we couldn't work out the problem _if__ she _didn't__ help us.没有她帮忙,我们就无法解决这个问题.
第一.用过去时是因为这是个虚拟语气,
并不是表示她真的没有帮助我们,
而是为了强调她的帮助对于我们的重要性.
第二,用过去时是因为主句的couldn't就是用的过去时,
后面的从句应该与主句保持时态一致.
2 this is a photo of _me__(i) i will tell you a story about it.这是我的一张照片,我告诉你其中的故事.
其实me和mine都可以,主要看句子的意思是想表达什么,强调什么.
句子里的a photo of me是“我的一张照片”,意思是：照片上的那个人就是我,我想给你讲讲我当时为什么要做出那个表情,为什么要摆那个POSE.
“a photo of mine”= a photo of my photoes
只表示“我自己拥有的众多照片中的一张”,并不一定是拍的我,照片上的人有可能是我同学或朋友.也不一定是我自己拍摄的照片,有可能是其他人赠送给我的.
3 a friend of _ours__
我们的一个朋友
ours是个名词性的物主代词,us只表示“我们”
ours = our friends
a friend of _ours =a friend of our friends.
4 mary has come back,but __the other__ students haven't.
玛利已经回来了,但是其他学生还没有.
a other b the other c the others d others
选b
是因为ACD都不合适.
首先,在一个具体的详细的语境里,
必须有定冠词the来修饰后面的名词,所以排除AD.
然后看C,the others 是个名词性的物主代词,后面不用再跟名词了.
the others = the other students
和原句中的students重复了
如果原句中没有后面那个students就可以选C

We couldn't solve the problem without your help. Without your help,I can't work out the problem He has been a The problem was so difficult that we couldn't work it out ea we can't work out the maths Problem()your help.A.with B.with we couldn't live without others 'help I can't finish the work without her help. The little girl couldn't work the problem out.She wasn't ___ __the problem,we couldn't know how to work it out.__with so 1()his help we couldn't finish the work successfully.2can yo The little girl couldn't work out the problem.she wasn't___c I couldn't find another way ____ the problem A to work out B He couldn't work out the math problem.(改为同义句) He ____ ____ _