外研版高中英语必修二《Let's celebrate!》SectionB PPT课件，共40页。
语言知识讲练
高 频 词 语
1. indicate v. 表明，显示；象征，暗示
【典例促记】
⊙What do the words in bold indicate: an order, a request, ability or possibility? (P17)
粗体的单词表明什么：命令、请求、能力还是可能性？
⊙The falling leaves indicate that the fall is coming.
飘落的叶子暗示秋天来了。
⊙All the indications are that we are going to receive reasonable support from abroad.
所有迹象都表明，我们将从国外获得有力支持。
⊙There are clear indications that the weather is changing.
有好些迹象显示天气要变了。
2. request n. 请求，要求
【典例促记】
⊙Mr and Mrs Harry Blunkett request the pleasure of your company at the wedding of their daughter ...
哈里•布伦基特夫妇非常荣幸地邀请您来参加他们女儿的婚礼……
⊙Being public figures, leaders are requested to appear strong and capable.
作为公共人物，领导者要表现得坚强且有能力。
⊙In Japan, the “OK” sign is a request for small change.
在日本，手势OK表示要零钱。
⊙Tom requested that I (should) help him.
汤姆请求我帮助他。
3. wave v. 挥手，招手
【典例促记】
⊙Oh, they’re waving at us！(P17)
哦，他们在向我们招手！
⊙She was in such a hurry that she didn’t even wave goodbye to us.
她走得很急，甚至都没来得及和我们挥手道别。
⊙Huge waves were breaking on the shore.
巨浪拍打着海岸。
⊙A wave of happiness flooded me.
我心中涌起一股幸福的暖流。
语法讲练
【语法讲练】
1. may/might have done表示对过去行为的推测，意为“也许/或许已经做过某事”，might的可能性更小。
【典例呈现】
◎John isn’t at home. I think he may/might have gone to school.
约翰不在家，我想他可能去上学了吧。
◎You might have read about it in the newspaper.
你可能已经在报纸上看到这个消息了。
2. must have done表示对过去行为的肯定推测，意为“一定做过某事”，只用于肯定句中。
【典例呈现】
◎He reasoned that since she had not answered his letter she must have left here.
他推断，由于她没有给他回信，她一定是已经离开这里了。
3. could have done是虚拟语气，表示对过去事情的假设，意为“本来能够做某事而没有做”。
【典例呈现】
◎You could have done better，but you were too careless.
你本来可以做得更好，但你太粗心了。
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