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【急!】请教几道英语语法题..

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【急!】请教几道英语语法题..
1.The research requires more money than_____.
A have been put in B.has been put in C.being put in D.to be put in
但是它的解析我完全没有明白,特别是那个more than.
2.____ if I had arrived yesterday without letting you know beforehead?
A.Would you be surprised B.Were you surprised
C.Had you been surprised D.Would you have been surprised
我很纳闷,它的意思不应该是“如果昨天我没有提前告诉你就来了,”么?
当然是昨天那个时候惊讶啊,would you be surprised 不是对现在的虚拟么?
3.____ you _____ further problems with your printer,contact your dealer for advice.
A.If,had B.Have,had C.Should,have D.In case,had
选C我能理解,但是我觉得选A也没有错啊,理解成对现在的虚拟.C比A好在哪里?
4.Televisions enable us to see things happen almost at the moment they are happening 还是 when they are happening?我觉得这是个定语从句,the moment 是先行词,when是关系代词,但是原句是没有
when的,应该怎么理解?
【急!】请教几道英语语法题..
/>The research requires more money than_____.
B.has been put in   
答案是B,这里的than 是关系代词 引导的是定语从句 并且在定从中 作主语 

2.A.Would you be surprised   
答案是A.这是错综 虚拟语气 主句与现在情况相反 从句与过去情况相反 .

因为假如你昨天来我不知道 我现在看到你会惊讶
 3.____ you _____ further problems with your printer,contact your dealer for advice.
A.If,had   B.Have,had   C.Should,have   D.In case,had
答案是C.主句是真实句
如果选A的话  主句应该用虚拟 理解成对现在的虚拟.

4.Televisions enable us to see things happen almost at the moment they are happening 还是 when they are happening?可以看做定语从句,the moment 是先行词,可以用that代替when引导定从 这种that的用法  也可以省略 .

再问: 所以用when也是没有问题的吧?
再答: 是的 在限制性定语从句中 有时可以用that代替关系副词why when where 或介词加关系代词 引导定从 这种用法的that也可以省略 最 常见的一个例子 the way that he speaks= the way in which he speaks=the way he speaks