Unit 4 Helping People around the world

一、重点单词

1. lack：n.&v. 不足，缺乏

【用法回顾】When there is a lack of food, there is hunger.

n. 由于缺乏 for lack of

v. be lacking in=lack sth. 缺乏

【考点训练】

1.）人们缺乏的不是力量，而是勇气。

People do not ______________; they lack ________________.

2.）他因罪证不足而被释放。

He was set free _____________evidence.

3) ----What makes Tom so absent-minded in class?

---- ___________ sleep.

A. Lacking of B. For lack of C. Lacking D. He lacked

2. worthy adj. 令人敬重的，值得的，有价值的

【用法回顾】: With the help of these armies and other worthy organizations, the UN assists

the victims of wars and disasters.

【考点训练】

The question is worthy of a discussion.

The question is worth ____________________.

The question is worthy ___________________.

It is worthwhile _____________the question.

It is worthwhile _____________the question.

【归纳总结】：worth, worthy 和worthwhile

be worth doing= be worthy of being done /to be done =It is worthwhile doing /to do

【联想拓展】

　worthy和worthwhile在句中可作表语和定语成分，而worth通常只作表语成分。

　a worthy leader 一位值得尊敬的领导

　a very worthy cause（事业）一份崇高的事业

二、重点短语

1. refer to 谈及，提到；指称；查阅，参考

【用法回顾】:I am pleased to have this chance today to talk to you about the United Nations ,or the UN, as it is more often referred to.

【考点训练】

1） 请写出refer to在下列句中的中文意思。

Although she didn't mention any names, we all knew who she was referring to.

The president spoke at the business meeting for nearly an hour without referring to his notes. The book refers to growing pains in teenagers.

2) The book ______ by Mr. Wu is written by my English teacher.

A. referring to B. referred to C. referred D. to refer

【联想拓展】

refer to ... as 把......当作......；