在when, while, if, unless, though, once等引导的状语从句中从句的主语和主句的主语一致, 且从句中的谓语含有be动词时, 为了使句子简洁, 可省略从句中的主语和be动词。
① While playing in the snow, the two pandas had great fun. ②Unless invited, he has decided not to attend that activity.
Unit 4 Wildlife protection
1. 重点短语
die out 灭绝 in peace和平地 in danger 在危险中 regardless of 不管；不顾
in relief 如释重负 to one’s relief 使某人欣慰的是 protect… from… 保护…免受
burst into laughter= burst out laughing 突然大笑 pay attention to doing sth 注意
respond to sth= in response to 对…做出反应 be concerned about 关心…
decrease by/to…减少了/到… on the decrease/ increase 在减少/ 增加中 without mercy 残忍的 at the mercy of 任由…的摆布 show mercy to 怜悯 have mercy on 对…表示怜悯
it is certain that… 一定能… for certain = for sure 确定地 come into being 形成；产生
a number of 许多 according to 根据 depend on 依靠 have an effect on … 对… 有影响
with one’s help= with the help of sb 在某人的帮助下 so that 表目的/ 结果
succeed in doing sth 成功的做某事 succeed to sth 继承某事
under construction/ discussion 正在被建设/ 讨论 in use 正在被使用
be employed in doing sth = employ oneself in doing sth 忙于做某事 do harm to sth = be harmful to sth 对…有害 there is no harm in doing sth 做某事无害
be used to do sth 被用来做… used to sth 过去常常做. be used to doing sth 习惯于做某事 It won’t be long before…过不了多久…就会… take measures to do sth 采取措施做某事 2. 重点知识点
1) die的搭配： die off 相继死亡 die out 灭绝
die of / from 因…而死 die away 消失；慢慢变弱 die down 渐弱；平息 2）with的复合结构： with + n/pron + adj / adv/ 介词短语/ 现在分词/ 过去分词/ 不定式
With a lot of problems to settle, she can’t go out. （将来） With time going by, he is getting along well with his English. (主动. 进行) With the work done, he can go out. （被动，完成）
Unit 5 Music
1. 重点短语
dream of/about 梦想做… to be honest= honestly speaking = to tell the truth 说实话
attach (importance) to… 认为…有重要性 in addition 另外 in addition to 除了
form the habit of .. 形成…习惯 in the form of … 以…形式or so 大约 sort out 分类
pretend to do/ to be doing / to have done/ that-clause 假装做.. play jokes on 戏弄
in cash 用现金 earn money 挣钱 earn one’s living 谋生 rely on 依靠 You can rely on it that… 你可以相信/指望… be familiar with… 熟悉.. be familiar to.. 为… 所熟悉
in brief 简言之 be sensitive to… 对… 敏感 above all 最重要；首先
appreciate doing sth 感激做了某事 I would appreciate it if… 如果…. 我将不胜感激…
go wrong 出故障 come up with 提出 make up 构成；编造 agree on 就…达成一致 swap with 与… 交换 to one’s surprise 令某人吃惊的是 on the contrary 相反的是 what’s more 而且 as is often the case 情况通常如此
promise：允诺； 有…的希望； promising：有希望的；有前途的 2. 重点知识点
1) break的搭配：break into 闯入 break away from 从…中脱离
break up 分裂；解体 break out 爆发 break in 打断；插嘴 break down 出故障
2)as if 的用法 It looks as if it is going to rain.
1. He treats me as if I were a stranger. (虚拟语气：与现在事实相反)
2. He talked about Rome as if he had been there before. (虚拟语气：与过去事实相反)
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