1、Book 3 Unit 2 重点短语讲解1. In this way they cut down the fat and increased the fibre in the meal. (P15)【归纳】 cut down削减，减少，砍倒。【延伸】 cut in插嘴；cut off切掉，隔绝；cut up切碎；cut across 抄近路穿过。【易错点】 注意cut down后面介词的使用，如果表示“削减，减少”时，后面可以跟介词on；如果表示“使降低到”时，用to；如果表示“使降低了”时，用by。如：The doctor told my husband to cut down on smo
2、king. 医生嘱咐我丈夫少吸烟。You can cut the book down to 200 pages. 你可以把这本书减到200页。2. It cost more than a good meal in his restaurant!(P10)【归纳】 1. “more than 数词”意为“以上”，如：I have known David for more than 20 years. 2. “more than 名词”表示“不仅仅”，如： Jason is more than a lecturer; he is a writer, too. 3. “more than 形容词 /
3、 副词”意为“非常”，如：I am more than glad to help you.【延伸】 rather than而不是；other than除了；less than很少，不到。 【易错点】 no more than意为“只有，仅仅，不过（ = only; just ）”，强调“少”；not more than意为“至多，顶多，不超过”，其意义与 at (the) most 相同。3. Their balanced diets became such a success that before long Wang Peng became slimmer and Yang Hui put
4、 on more weight. (P15)【归纳】 before long不久以后，很快。常在句中作状语，多与动词的过去时或将来时连用。【延伸】 as long as 长达，只要；in the long run从长远来说；at longest最晚；for long = for a long time长期；long for 渴望；no longer 不再； long ago很久以前。【易错点】 long before意为“很久以前，在以前很久”可以单独使用，后面也可以接从句，常与过去时或过去完成时连用。如： She said that she had heard of it long befo
5、re. 她说她早就听说过此事。 I knew you long before I knew him. 我认识你远在我认识他之前。4. He could not have Yang Hui getting away with telling people lies!(P10)【归纳】 get away with侥幸逃脱，逃离。with是介词，后面跟名词，代词或动名词。【延伸】 get rid of摆脱，除掉；get over克服；get down to认真做；get along进展，相处； get together聚会，联欢；get in touch with与取得联系。【易错点】 get away with与get away from意思不同，get away from意为“从走开、离开，从逃脱”。如：In no way can the murderer get away with the crime. 绝不会让杀人凶手逍遥法外。Many people got away from the wrecked ship on a raft. 许多人乘救生艇离开了遇难的船。