Unit 14
二、重点讲解
1. Have you packed yet? 你打包了吗？
（1）是一个现在完成时的句型，它是在两个时间上，一是过去，一是现在。它的动作发生在过去，但对现在有影响或结果，而这种影响和结果是说话人的兴趣所在，所以常常后面不用时间状语。Have/has+动词的过去分词，是它的基本结构。
如：Someone has broken the door.有人把门打破了。（结果，门仍破着）
（2）pack包装，把……装箱pack sth(up)into… 整理行装
如：Pack clothes into a truck. 把衣服装进衣箱内。
pack into塞进，挤进。
如：The children packed into the cinemas on a wet day. 在雨天，孩子们挤进电影院。
2. I have not cleaned out the refrigerator yet. 我还没把冰箱清除干净。
clean sth. out 打扫某物之内部，扫除某物的尘土等。
如：It is time for you to clean your bedroom. 现在该你打扫你的卧室的时候了。
clean sth up清除罪犯和不道德分子，整顿(某物)。
如：The mayor has decided to clean up the city. 市长已决定要整顿市政。
clean sth down清扫，擦干净。
如：Clean down the walls. 把墙上的尘土扫下。
3. I have not done any of these things yet Because my grandfather came to chat to me.
那些事情我一样也还没做，因为我祖父来和我聊天。
（1）because连词，因为。
如：I did it because they asked me to do it.
我做这事是因为他们要我做。
（2）because所表达的原因是不知道的，如要表达明显的理由，或被认为是知道的，就用as，for，或so。
如：As it is raining，you had better take a taxi.=It is raining, so you had better take a taxi.
既然下雨，你最好坐出租车来。
（3）because of 后面加名词或名词短语。
如：Because of his bad legs，he could not walk so fast as the others.
因为他的腿有毛病，他不能和别人一样走得快。
4. Be sure not to miss them if they come to a city near you-if you can get tickets.
如果他们到了一个离你近的城市，务必不要错过，如果你能得到票的话。
be sure to do务必，一定要。
如：Be sure to tell me when you arrive home. 到家后务必要告诉我一声。
★注意动词不定式to do的否定形式，要直接在to do前加not。
如：Be sure not to wake up the sleeping boy.
一定不要吵醒在睡觉的孩子。
5. I feel like I have done something that wasn’t important to me before.
我想我做了些原先对我并不重要的一些事情。
feel like+ doing sth.想要，欲要。
如：I don’t feel like eating a big meal now. 我现在不想吃大餐。
6. They provide homes for many endangered animals, and help to educate the public about caring for them.
我们为濒危动物们提供住所，并教育公众照顾他们。
provide sth for sb /provide sb with sth把某物提供给某人。
如：These letters should provide us with all the information we need.
这些信应该为我们提供所需的全部信息。
