6.Money begets money.

5.Boys will be boys.

4.Diamond cuts diamond.

3.Live and let live.

2.Like will to like.

1.Dog does not eat dog.

9.Some animals, including some bears, only half-hibernate.有些动物，包括某些熊，只是半冬眠。

　　 (1)including+名词/代词作同位语补充说明它前面的名词，有字典把including归类为

介词。如：

　　 The new traffic rules are made known to everyone,including children(=children included)对每个人，包括儿童在内，都宣讲了新的交通规则。

　　 (2)half-hibernate“半冬眼”是复合动词。又如：

half-open半开，half-close半闭，half-cook半熟。

妙文赏析

How Do Frogs Breathe Under Water?

青蛙在水下呼吸的秘密是什么?

　　 Under water, frogs breathe through their skins. A frog is an amphibian. That is to say it lives both on land and in water. It has lungs, but it has not ribs and therefore cannot expand its chest and suck air into its lungs as reptiles, birds and mammals do. On land air is drawn in and out of the frog's nostrils, which have valves in them, by pulsations of the floor of the mouth. The air is forced in and out of the lungs by contractions of the throat and body muscles. A frog's mouth is always kept tightly closed and the pulsations of the throat vary from 120-140 times a minute. Even on land the skin plays a greater part in breathing than the lungs. However,air can be absorbed only through a moist skin.

　　 If the skin became too dry, the frog will die. Therefore the skin contains glands which secrete a clear mucus or slime whose function is to keep the skin moist and supple. The skin absorbs water as well as air, for frogs do not drink.

　　 Frogs are cold-blooded. That means they are as warm or as cold as the air or water surrounding them. In winter they hibernate under water, where their body temperature falls, their bodily functions are kept at a minimum and breathing is carried on entirely through the skin.

　　 注释：amphibian两栖动物，reptiles爬行，mammals哺乳动物，pulsation跳动，gland腺，secrete分泌，mucus粘液，supple柔软的

思维体操

　　 同学们，下面的谚语首尾都一样，你能给出恰当的汉语吗?

7.The second is connected with the main use the body makes of food…(=The second has something to do with the fact that body makes use of food…)第二是与身体利用食物的主要用途有关……。

　　 (1)make use of 利用,使用/make good use of 好好利用/make full use of充分利用=make the best of.如：

　　 You must make use of the unsold textbooks.你们必须利用未卖掉的教材。

　　 (2)be connected with 与……有联系。如：

　　 His remarks were connected with the recent situation in the Middle East.他有言论同中东最近的形势有关。

6.Hibernation is more than sheep. 冬眠不只是一般的睡眠。

　　 more than在本句作“不止于此，不只是”(=not only)讲。如：

　　 China Daily is more than a newspaper. It helps to improve our English.《中国

日报》不仅仅是一份报纸，它还有助于提高我们的英语水平。

　　 This mobile phone is more than a telephone. It tells you time and weather.这种移动电话不仅仅只是一部电话。它还能报告时间和天气情况。

5.Then it has no choice but to lie down and sleep.于是别无选择，只好躺下睡觉。　　 but在此句是介词，作“除了……以外”(=except)解，常用于否定句中，构成句型：have no choice but to do 除干……别无选择。(对比：cannot choose but +do只有干……)。如：

　　 He has no choice but to give it up=He cannot choose but give it up.他只有放

弃此事。