Question

單句改錯

1．It was in the classroom which we had the class meeting yesterday．

2．It is to help others what his duty is．

3．It was until he told me about it that I learnt the truth．

4．You must look around after you cross the road．

5．He was walking along the sands as he saw a big footprint in the sand．

6．As is known to all that Taiwan is one part of China．

Answer 1

答案：
解析：

　　答案：1．which→that

　　提示：強調(diào)句中除被強調(diào)部分為人時可用who/whom外，其他一律要用that。

　　答案：2．what→that

　　答案：3．until前加not

　　提示：not…until直到……才，在強調(diào)句中要把not until放在一起。

　　答案：4．a(chǎn)fter→before

　　提示：根據(jù)句子意思應是在此之前。

　　答案：5．a(chǎn)s→when

　　提示：as引導的時間狀語從句中的動詞要用進行時態(tài)。He was walking along the sands when he saw a big footprint in the sand．＝As he was walking along the sands he saw a big footprint in the sand．

　　答案：6．As→It

　　提示：it為形式主語，真正的主語為后面的從句；as引導非限制性定語從句放于句首，并用逗號隔開。