④His strength gave out after he ran that long distance.

　　跑完这么长一段距离，他已精疲力竭。

　　[易混辨析]

run out "用完，耗尽"，不及物动词短语，其主语常为食物、金钱、时间等名词，与give out意义及用法相同 run out of "用完，耗完"，及物动词短语，其主语是表示人的名词或代词，其宾语常为食物、金钱、时间等名词。与动词短语use up意义及用法相同 　　3.We will also have to rely more on alternative energy，such as solar and wind power.(P2)

　　我们也将不得不更多地依赖替代能源，如太阳能和风能。

　　★rely on/upon依赖，依靠

　　①Companies rely on e­mail for their employees to communicate with each other.

　　很多公司依靠电子邮件使员工相互沟通。

　　rely on/upon (sb.) doing ...

　　　　　　　　　　 指望/依赖/相信某人会做......

　　rely on sb. to do ... 指望/依赖/相信某人会做......

　　rely on sb. for sth. 依靠某人得到某物

　　rely on it that ... 指望......；相信......

　　②I rely on her to pay (pay) back the money.

　　＝I rely on her paying (pay) back the money.

　　我相信她会还钱。

　　③As pack animals, wolves work together to hunt and rely on howling (howl) as an important means of communication among each other.

　　作为群居动物，狼一起捕猎，把嗥叫作为一种相互交流的重要方式。

　　④You may rely on it that they will support you.

　　你可以指望他们支持你。

　　★alternative adj.替换的；供选择的n.可供选择的办法或事物

　　⑤Do you have an alternative solution to the problem?

　　你有没有别的办法来解决这个问题？

　　an alternative to ...　　 　 ......的替代品

　　have no alternative but to do sth. 别无选择只好做......

　　have the alternative of 有......的选择

　　There is no alternative ... 别无选择

　　⑥You have the alternative of marrying or remaining a bachelor.

　　你可以结婚也可以仍做单身汉，任你选择。

　　⑦I have no alternative but to accept (accept) the offer.

　　我除了接受该项提议之外，别无选择。

　　4．To get rid of garbage problems, the city will load huge spaceships with waste materials and send them towards the sun, preventing landfill and environmental problems.(P2)

　　为了摆脱垃圾问题的困扰，城市将会把废物装进巨型宇宙飞船，把它们送往太阳，这样做就防止了垃圾填埋和环境问题。

　　★get rid of除掉；摆脱；处理掉

　　①It is easy to get into the habit of taking drugs, but it's very difficult to get rid of it.

　　染上吸毒恶习很容易，但要戒除却很难。

　　rid sb. of 使某人摆脱

　　rid ...of 使摆脱；使解除；使去掉

　　②He believed that his manager wanted to get rid of him for personal reasons.

　　他认为经理是出于个人原因想开除他。

　　③You must rid yourself of these oldfashioned ideas.

　　你必须摆脱这些陈腐观念的束缚。

　　★load vt.装；装载n.负担，负载；运载量

④He is loading the goods into the back of the car.