北师大版高二选修8学案： Unit 22考点点拨.doc

考点点拨1. on somebodys behalf【点拨】on somebodys behalf相当于on behalf of somebody，意为：代表（或代替）某人；因为某人，为了某人。如：on behalf of the entire company, i would like to thank you for all your work.unfortunately, george cannot be with us today so i am pleased to accept this award on his behalf.dont worry on my behalf.【考例】on behalf of everyone here, i wish you a pleasant journey back to your country. (辽宁2013单项填空) 2. reserve【点拨】reserve既可作名词也可作动词。reserve作名词时，意为：储备（量），储藏（量）；保护区。如：germanys coal reserves were concentrated in a few large fields.his father works in a nature reserve protecting kangaroos in australia.reserve作动词时，意为：预订，预约；保留，储备。如：i reserved a double room at the lamb hotel.these seats are reserved for the elderly and women with babies.【拓展】 reserved adj.意为：预定的；沉默寡言的。如：may i sit here, or is this seat reserved?even though im quite a reserved person, i like meeting people. reservation n.意为：预定；保留意见，疑惑。如：ill call the restaurant and make a reservation.they support the measures without reservation.【考例1】the power of imagination need not be reserved for children only. (广东2013阅读理解a篇)【考例2】“its such a nice place.” mother said as she sat at the table reserved for customers. (浙江2012单项填空)【考例3】id prefer to reserve my judgement until i find all the evidence. (福建2011单项填空)3. changeable【点拨】changeable是形容词，意为“可能变化的，易变的，常变的”。如：the weather is very changeable at this time of year.mary experienced changeable moods and panic attacks.【考例1】according to him, the weather in england is very changeable and uncertain and it attracts the english as well as the outsider. (重庆 2013阅读理解e篇)【考例2】increased carbon dioxide (co2) in the air from burning coal and oil can have an effect on how plants produce oxygen, while higher temperatures and changeable rainfall patterns can change their patterns of growth. (四川 2012阅读理解e篇)4. slip【点拨】slip作动词时，意为：滑倒，滑跤；滑落，脱落；溜，悄悄疾行（常与in, out, away连用）；迅速放置，悄悄塞，偷偷放；下降，退步，变差。如：polly slipped over on the ice.stevens hat had slipped over one eye.just slip out of the room while nobodys looking.ann slipped the book into her bag.standards have slipped in many parts of the industry.【考例1】diane slipped into the water and dived happily until white caps began rolling in and it became harder to swim against the