Section Ⅱ — Learning about Language,Using Language,
Summing Up & Learning Tip
课后篇巩固探究
一、单句改错
1.I was walking on the street when the accident was occurred.
答案:去掉第二个was
2.They were sitting back by back over there.
答案:by→to
3.He wrote me a letter which he explained why he was fired.
答案:which→where或which前加in
4.It was their team spirits that helped them out.
