1．(教材P49)When there is a lack of food, there is hunger.

　　食物短缺时，就会有饥饿。

　　★lack n．&vt.　缺乏

　　(1)a lack of ...　　　　　　缺乏......

　　for/through lack of ... 因缺乏......

　　(2)lacking adj. 缺乏的

　　be lacking in 缺乏

　　(3)lack for nothing 什么也不缺

　　①He can not buy a house because of his lack of money.

　　他因缺钱买不起房子。

　　②Her real problem is that she lacks courage.

　　她的真正问题是缺乏勇气。

　　③The trip was cancelled for lack of interest.

　　因缺乏兴趣，这次旅行被取消了。

　　④He is good at his job but he seems to be lacking _in confidence.

　　他擅长工作，但似乎缺乏信心。

　　⑤They are so rich that they lack_for_nothing.

　　他们非常富有，什么东西都不缺。

　　2．(教材P50)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.

　　我很高兴今天有机会跟大家谈谈联合国，也叫UN--这个名称在英语里更为常用。

　　★refer to　谈及，提到；与......相关，涉及；查阅，参考

　　refer ...to ...　　　　　把......提交给......

　　refer to ...as ... 称......为......

①Don't refer to this matter again, please.