Unit 5 The silver screen
1. silver screen 银幕；电影（业）
2. practice doing sth. 练习做……
3. opinion n. “意见、看法、主张”。常见短语：give(express)one's opinion on (upon)… “对……发表意见” in one’s opinion “依据某人的看法，在某人看来”。 e.g. ①In my opinion，he will fail in the exam. 在我看来，他考试会失利的。 ②He gave his opinion on what we had done. 他对我们所做的一切发表意见。 [注意]在上面两个短语中，opinion通常只能用单数形式，而不能用复数形式。
4. What do you think happened before this scene? 主语是What，谓语动词是happened，do you think是插入语，类似还是suppose, believe, imagine等动词。
