Question

高一英语题目

It is necessary to make your decision____everybody,___.
A.known;in my opinion B.know;I think
C.known by ;I believe D.known for ; in his opinion
答案是A

-what are you mailing,Ryan?
-A textbook___a new method of teaching physics.I want my friends to take a look at it.
A.is based on B.based on
C.basing upon D.which based upon
答案是B 怎么区分base on 和 be based on？
It was very polite _____ him to give his seat on the bus to the old man.
A for B of

选B 为什么A不行？

Answer 1

be polite of 是固定用法，意思是对于某人来说或做某事来讲是礼貌的
be based on 是过去式，一般是说明前者，而base on 是强调后者
make sth done(known)固定用法，in my opinion 是在我看来的意思，可以作为状语独立使用。

Answer 2

base是及物动词，语法base sth on...
其被动语态就是be based on ,而3呢，很简单，形容一个人的某样特质时用of 而不用for，我不知道第一题你想问什么？不过make sb done是使某人做。。。。。in my opinion 可以作为状语独立使用

Answer 3

1、make sb known 就是“使……知道”的意思，MAKE SB DONE表示被动（令某人……）

2、based on在这里就是以过去分词作为定语，相当于定语从句“A textbook which/that is based on a new……”省略“WHITCH IS”,修饰TEXTBOOK，BE BASED ON是单独用的。

3、It is……of sb，当中加形容词，是惯用用法，表示“某人很……”。
be polite of him 意思是他很礼貌。
例如 it is kind of you，意思是“你很好”。

Answer 4

B中省略了which is 用based on
be based on一般直接用 而不是用在that which 之类的从句中