这两句英语句尾的 all/both 能写成 all of them / both of them吗? It is hard to please all.

Question

It is hard to please all. (all of them)
I like these two dolls. I will take both. (both of them)

这两句英语原句句尾的 all / both 可以改写为 all of them / both of them吗?

Answer 1

回答：可以，您说的完全正确。使用 all 和 both 时应注意以下几点：
1. all指代三者以上；both指代两者。
2. 限定词(定冠词、物主代词、指示代词、名词所有格)应置于这两个词之后。如：
All my / the / these / Tom's friends know it.
Both my / the / these / Tom's friends came late.
3. all / both of 后跟名词时，名词前要加限定词。如:
All / Both of the / his / these / Tom's books are missing.
4. all指代所有人时，动词用复数；指代所有事情或不可数名词时，动词用单数。如：
He has four sons. All are at school.
All is my fault. All （of the money ) is mine.

Answer 2

It is hard to please all.
如果这句没有上下文，就单单这一句话，表示的是很难让所有人都满意，这时候就不能换成all of them了，所以你要根据句子所表达的意思来定
I like these two dolls. I will take both.
这句话就可以换成(both of them)

Answer 3

第一个不可以改成all of them，意思为众口难调，第二个可以改成both of them。

Answer 4

可以。
第一句，it 做形式主语，真正的主语是 please all /please all of them (取悦所有人) 这里用all 说明人数大于等于三
第二句 ，both 两者都，与前面的two对应。因为前文已经出现 two dolls，后面可以省略them。

Answer 5

第一句不能改成all of them,句子并没有出现具体指代的哪些人，所以是泛指。第二勿可以！因为both of them中them 指前面提到的two dolls.