I thought____us students to have plenty of exercise every day.A.It's necessary to B.it necessary for C.it necessary of D.it's necessary of请教选什么为什么

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I thought____us students to have plenty of exercise every day.A.It's necessary to B.it necessary for C.it necessary of D.it's necessary of请教选什么为什么
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I thought____us students to have plenty of exercise every day.A.It's necessary to B.it necessary for C.it necessary of D.it's necessary of请教选什么为什么
I thought____us students to have plenty of exercise every day.
A.It's necessary to B.it necessary for C.it necessary of D.it's necessary of请教选什么为什么

I thought____us students to have plenty of exercise every day.A.It's necessary to B.it necessary for C.it necessary of D.it's necessary of请教选什么为什么
选B 这里考的是:it is + adj + for sb to do sth 的用法
如果是it is necessary of 的话,就没有for sb 就直接是 to do sth (例如:it is wise of you to choose this class.)
翻译:我想,每天得到足够的经验对我们学生来说是很重要的

选B
think it + adj.表示认为什么怎么样,这里it是形式宾语,真正的宾语在to后面
对某人来说用介词for

选择 B 这个是一个句型 think it necessary for sb to do sth....

这里有两个语法点:
第一、形式宾语的应用。在这个句子中,I thought 为句子的主语和谓语,it 是形式宾语,真正的宾语是后面的不定式短语,中间的形容词是宾语补足语,简称宾补。
I thought it necessary for us students to have plenty of exercise every day...

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这里有两个语法点:
第一、形式宾语的应用。在这个句子中,I thought 为句子的主语和谓语,it 是形式宾语,真正的宾语是后面的不定式短语,中间的形容词是宾语补足语,简称宾补。
I thought it necessary for us students to have plenty of exercise every day.
主 谓语 形式宾语 宾补 真正宾语

采用形式宾语可以避免句子头重脚轻的情况,本句如果不用形式宾语,则应该是:
I thought \ to have plenty of exercise every day \ necessary\ for us students .
第二、 it is + adj + for sb to do sth
此句中的形容词多为对事情的形容,用for.
it is + adj + of sb to do sth
此句中的形容词多为对人的品格性情进行评价的形容词,用of:

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