Lesson 16
A Polite Request彬彬有礼的请求

66'

7'

1，双重条件的句子if he lets you go. without a ticket

45'

2，固定用法no parking area

18'

3，nothing but和nothing more

26'

4，a...like this 和 cannot fail

41'

5，wrong place不合适的地方

25'

6，注意介词on my car

22'