高一英语教案:下学期15单元重难点解释

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Unit 15I.Words and expressions:1. recognize vt. 认出,识别;认可e.g. I recognized my old friend at once.I couldn’t recognize him at the beginning for he has changed a lot.※be recognized as 被承认是e.g. Tom is recognized as the best footballer in the school.2. explain vt. &vi. 解释;说明explanation n.e.g. Can you explain the reason for the failure?She explained that she couldn’t come because she was ill.He explained why he was late.I don’t understand it. Can you explain?※explain 不能接双宾语,即不能说explain sb. sth. ,只能说explain sth. to sb.e.g. He explained the reason to me.不能说:He explained me the reason. (╳)有这样用法的单词还有introduce/ suggest等3. continue vt. &vi. 继续(1)vt.※continue + doing/ to do 继续做某事e.g. They continued to work/ working after a short rest.continue + that 继续说道e.g. “We must finish the task tomorrow.” he continued.(2 ) vi.e.g. The fighting continued for a week.4. call on访问;号召e.g. An old friend called on me the day before yesterday.The government called on everyone to help those who need help.※常考的关于call的短语搭配call for call off call at (some place) call up需要,要求取消访问(某地)打电话;召集;使想起call back call in call out回电话;回想起;召回召集大声喊叫5. bring back带回来;使恢复e.g. The music brought us back to the old happy days.The doctors’ careful attendance brought him back to health.※常考的关于bring的短语搭配bring about 造成;带来(变化等)bring down 使降低;使倒下bring in 收获(庄稼等);提出,引进bring out 出版,生产;使显现bring up 抚养;提出(议题等);(船等)停下;呕出6. at most= at the most 最多,至多at least= at the least 最少,至少e.g. I can pay you 10 pounds at (the) most.It will at least five hundred francs.7. attend vt. &vi. 出席,参加;照顾,护理attendance n. 出席;出席人数;护理,照料attendant n. 出席人;服务员e.g. attend school/ class 上学/上课attend a meeting 参加会议attend a lecture 听报告Did you attend the meeting yesterday?She was sick so she didn’t attend her classes.※attend on sb. = take care of sb.8. besides(注意区分beside)(1)adv. 此外,而且(=what’s more; in addition)e.g. I am very busy. Besides, I don’t want to go.He helped me to find an apartment; besides, he lent me some money. (2)prep. 除……之外e.g. Besides us, there were twelve people in the garden.I bought some novels besides a Chinese-English dictionary.※besides 表示“除……之外(还有)”except 表示“除……之外”e.g. They all went there besides me. (除了我以外,他们也都去了那里。

)They all went there except me. (除了我以外,他们都去了那里。

)II.Key points in each part§Warming up1. act out 把……表演出来act as 充当……角色;担任……工作e.g. Act out the dialogue with your partner.I don’t understand their language; you’ll have to act as the interpreter.§Listening2. What is missing?辨析missing, lost &gone三者的共同点:都是adj.,都有“丢失”的意思。

不同之处:missing 强调“失踪了、不见了”,有可能还找得回来。

lost 强调“失去的,丧失的”,一般指找不回来了。

gone 强调“过去的,不见了”,但只能做表语。

e.g. My English-Chinese dictionary is missing.They have found the missing child in the forest.It’s no use crying over the lost chance.My pen was lost so I had to buy a new one.My fever is gone but I still have a cough.The days are gone when the workers lived a hard life.§Speaking3. It seems that it is going to be just another normal day.But suddenly something unusual happens.Seem用法总结::(1)Seem + (to be )+形容词/ 名词/ 介词短语/ 分词(to be可以省略)e.g. You seem to be in a great hurry. 你好像非常匆忙.(2)Seem + 不定式(一般式,完成式或进行式)e.g. He did not seem to have changed. 他似乎没有变。

Several people in the crowd seemed to be fighting.人群中好像有好几个人在打假。

(3)It seem that ……It seemed that everyone was satisfied.=Everyone seemed to be satisfied.好像人人都很满意。

(4)It seems as if/as though …It seems as if you are the first one hear. 看起来你是第一个来这儿的。

(5)There seems (to be) …There seems (to be ) no reason for believing him.似乎没什么理由相信他。

There does not seem to have been any difficulty over the money problem.在钱的问题上似乎已没什么困难。

※辨析seem , look 与appearseem 表示有某种根据的判断,这种判断往往接近或符合事实。

look 强调视觉上的印象。

appear 表示从外表或表面上看“似乎”,“好像”,有时暗含“事实上并非如此”之意。

注意①三个词都可以后接形容词.名词.分词等。

②appear与seem 后可接to do,而look 后只可接to be.③look 后可接as if 引起的从句,而不能接that 从句。

It appears a true story.这故事似乎是真的。

He looked a perfect fool.他看起来是个十足的傻瓜。

She appears to have many friends.她好像有很多朋友。

It looks as if it is going to rain.看起来要下雨了。

It appears that the plane did not land at Rome.看起来飞机没在罗马降落。

§Reading4. I am sorry, but I do not know you.(1)句中I do not think I know you.是否定转移的用法,不能说:I think I do not know you.主语为第一人称,谓语动词为believe, expect, guess, imagine, suppose, think且含宾语从句的复合句,在变否定句时要进行否定转移。

I do not believe he has worked out the difficult problem.我相信他还没有解出这道难题。

I do not suppose they’ll be back tonight.我像他们今晚不会回来了。

But I do not think we can go.但是,我想我们不能去。

I did not imagine that they would say anything.我想他们不会说什么。

(2) butbut 永在表示歉意的话语后,可引导一个句子,常不能译作“但是”,可以不翻译。