大学英语： I am sure of his sincerity. （我确信他的诚意。）

翻译下面的句子，掌握sure的用法：

　　1) I am sure of his sincerity. （我确信他的诚意。）

　　2) You are sure of a warm welcome.（你肯定会受到热烈的欢迎。）

3) I don't know for sure whether he will come or not.（我不很确切地知道他是否会来。）

　　4) Make sure that you turn off the light when you leave.（确保在你离开时把灯关掉。）

5) Be sure not to forget what your parents said to you.（千万别忘了父母对你说的话。）

2. Americans don't have a corner on the “death” market, but many people feel that the United States leads the world with the worst taxes.

have a corner的意思是“垄断”，例如：have a corner on the cotton market （垄断棉花市场）；have a corner on the black vote（垄断黑人选票）。有时也会见到以in 代替on的用法：have a corner in banking

　　lead在句中的意思是“走在…前列”，“在……领先”，“胜过”。

请翻译下面的句子：

　　1) He leads his class in English.（他在班上英语学的最好。）

　　2) He led the broad jump with a leap of 26 feet.（他以26 英尺的成绩在跳远中领先。）

　　3) Pollution still leads the list of major problems in that country.（污染仍然是那个国家的头号严重问题。）

3. Taxes consist of money which people pay to support their government.

　　句中which 引导的定语从句修饰the money。