If you have made good preparation before,you ______ about the coming examination now.A would not be worried B would not have worried.C could not be worried D could not have been worried.答案是A我明白 想请教的是B 和D 出现在什么用法

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Ifyouhavemadegoodpreparationbefore,you______aboutthecomingexaminationnow.AwouldnotbeworriedBwouldnot

If you have made good preparation before,you ______ about the coming examination now.A would not be worried B would not have worried.C could not be worried D could not have been worried.答案是A我明白 想请教的是B 和D 出现在什么用法
If you have made good preparation before,you ______ about the coming examination now.
A would not be worried B would not have worried.
C could not be worried D could not have been worried.
答案是A我明白 想请教的是B 和D 出现在什么用法上?
2 "Who Moved My Chess?" ______is a bes-selling book,is written by Spencer Johnson
A which B that C it D what.
说此处需要一个引导非限制性定语从句的词 只有A可以
什么是引导非限制性定语从句的词
第一个问题的第一句是 if you had made good preparation before..

If you have made good preparation before,you ______ about the coming examination now.A would not be worried B would not have worried.C could not be worried D could not have been worried.答案是A我明白 想请教的是B 和D 出现在什么用法
如果把主句中的have 改为过去式had ,答案就是B 和D 那种形式,一般情况下could 和would 可以互换!
非限定性定语从句起补充说明作用,缺少也不会影响全句的理解,在非限定性定语从句的前面往往有逗号隔开,如若将非限定性定语从句放在句子中间,起前后都需要用逗号隔开.
简单地说,去掉这个从句,句子的成分还是完整的!讲得过去,不会出现语法错误!它只是让这句话的意思很具体明确了!

1 b d 是对过去的虚拟 a 是对将来虚拟
2 非限制性定语从句,特点是前面有逗号隔开。不能用that ,只能用which

第一题的B选项应该是 been worried. 即使是有been,因为句尾是now,也不能用have.
D选项,只要查一下语法书,看看 If 条件句 对过去、现在、将来虚拟时,主句从句分别用什么 词和时态 你就会明白啦!
第二题:首先可以引导非限制性定语从句的先行词绝对不可以用 that !
其次,关于非限制性定语从句。是从句部分...

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第一题的B选项应该是 been worried. 即使是有been,因为句尾是now,也不能用have.
D选项,只要查一下语法书,看看 If 条件句 对过去、现在、将来虚拟时,主句从句分别用什么 词和时态 你就会明白啦!
第二题:首先可以引导非限制性定语从句的先行词绝对不可以用 that !
其次,关于非限制性定语从句。是从句部分用逗号隔开,一般放在主语后面,修饰主语,或对其解释说明;去掉从句部分,往往意思不够明确,但对整个句子结构没有影响; 当先行词是专有名词或物主代词和指示代词所修饰时,其后的定语从句通常是非限制性的。
另外,引导非限制性定语从句的词 叫做先行词。就是引导从句的词,是在从句中充当一定的成分的。就像本题中 which 在从句中充当主语!
希望对你有所帮助!!!加油~~~

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非限制定语从句的词 就是逗号后面的连词(通常是which)代替前面的整个句子 或者是其中的一个短语。