英语题 改错

Question

改错（说明原因）
This is the book that my sister bought it yesterday。
He helps clean the house and wash the dishes at home。

Answer 1

This is the book that my sister bought it yesterday。
错在多了一个“it”
此句是定语从句，判断从句前看看是否有先行词，而这句话的先行词就是the book.that后面引导的是从句必须有主谓宾，bought是谓语动词后必接一个宾语，而这个宾语就是the book，避免出现两个宾语所以省略。
He helps clean the house and wash the dishes at home。
这句错在一个完整的句子不能出现两个谓语动词。所以前面必须改为helps to，还有一个是主谓时态要一致，把wash改为washs

Answer 2

1. This is the book that my sister bought yesterday.

定语从句，后面的it 要去掉。

2. He helps to clean the house and wash the dishes at home.

help to do sth 帮助做... (惯用法)

Answer 3

第一句，it去掉。因为前边已经有特指the book，后边如果在用代词it 来说的话，意思重复了。
第二句，是对的..美国小说里都这样写..不知道中国的语法怎么会给它加上TO DO STH

Answer 4

This is the book that my sister bought yesterday.
定语从句的引导词就是从句中‘brought’的宾语，‘it’式多余的；

He helps to clean the house and wash the dishes at home.
如果，‘help sb. doing/do something'，但这里‘help’后面没有宾语，应当加上‘to do...’。

Answer 5

第二句help to do=help do，to可以省略

Answer 6

This is the book which my sister bought yesterday。
把 that 改成 which. 去掉 it.

He helps cleaning the house and washing the dishes at home。
clean 和 wash 后面加ing.