Question

英语十万个为什么(分不是问题,要具体讲解)

1.My ______ of this weekend's activity is going out with some
A idea B opinion C mind D thought
为什么选A,不选B、C、D
2.This is an old photo of my aunt's when she had ___,and now she has quite a few ______
A short hair；grey hairs B short hairs；grey hair C short hair；grey hair D short hairs；grey hairs
为什么选A
Many people agree that____ knowledge of English is a must in ___ internationan trade today.为什么填 a;/
4.______ of them knew about the plan because it was kept a secret.
为什么用none不用no one
5.none 与 no one 的用法区别，举例说明。

Answer 1

opinion是对某件事的看法和态度，mind泛指一切想法，thought是比较抽象的想法思维，idea是一个主意。

首先grey hairs用复数因为有few在，指一些头发。如果按照出题意图，前面的short hair单数指的是发型而不是短的头发。从语法上来说short hairs也对。

a knowledge of sth 是习惯用法，也可以说having a knowledge of sth。international trade是一个概念，泛指，所以不用冠词

none of them=no one（单数）=nobody（单数）

另外none也可以单独用，相当于nobody/no one，比如
We had three cats once none (of them) is/are alive now

而no one=nobody