指出下列句子的错误并改正
题目
指出下列句子的错误并改正
1.He spends two hours to do the homework every day.
2.My sister was reading when my brother was playing.
3.I was playing the violin while there was a knock on the door.
4.One of the most interesting thing in summer is swimming.
答案
1.the去掉
2.when变成while
3.while变成when
4.thing 加s
举一反三
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我想写一篇关于奥巴马的演讲的文章,写哪一篇好呢?为什么好
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