必修5,unit31. impression n. 印记；印象；感想；后接of sb./ of sth./ on sb./ that 从句；e.g. My first impression of him was favourable.他给我的第一印象不错。
I got the impression that they were unhappy about the situation. 我觉得他们不满于当时的状况。
知识拓展：impress v.给……留下深刻的印象；使铭记；使感动；常用结构有：impress sth. on/upon sb./impress sb. with sth.给……留下深刻的印象；使铭记；It impressed me that she remembered my name.令我佩服的是她记得我的名字。
2．take upto fill or use an amount of space or time 占用（时间）；占据（空间）to learn to or start to do sth 开始做（某项工作）；开始从事to accept sth. that is offered or available 接受（建议或能得到的东西）e.g. The table takes up too much room. 这张桌子太占地儿。
They have taken up golf. 他们学起打高尔夫球来了。
She took up his offer of a drink. 他请她喝一杯，她接受了。
He takes up his duties next week.他下周就要开始履行职责3. constantly adv.始终；一直；重复不断地e.g. Fashion is constantly changing.时尚总是日新月异。
知识拓展：constant adj.连续发生的；不断的；重复的；4. previous adj.先前的；以往的；（时间上）稍前的e.g. No previous experience is necessary for this job. 这一工作无需相关的经验。
I couldn't believe it when I heard the news. I had only seen him the previous day.听到这个消息时，我不敢相信；我就在前一天还见到过他。
知识拓展：previously adv. 先前的；早先e.g. The building had previously been used as a hotel. 这座楼房早先曾用作旅馆。
5 remind v.提醒；使想起；常用结构有: remind sb. to do sth.提醒某人做某事；remind sb.＋(that)/wh-从句提醒某人……；使某人想起……；remind sb. about/of sth. 使某人想起或意识到……；提醒某人某事e.g. I'm sorry, but I've forgotten your name, can you remind me? 很抱歉，我记不起你的名字，你能提醒我一下吗？You remind me of your father when you say that. 你说这样的话使我想起了你的父亲。
知识拓展：reminder n.提醒物；引起回忆的事物6 bend v.（bent bent）弯曲；使弯曲；弯腰；弯身；常用搭配有: bend one's mind/efforts to sth. 致力于某事；bend sb.to sth. 迫使；说服bend the truth 歪曲事实e.g. It's hard to bend an iron bar. 把铁棒弄弯很不容易。
She bent her head and kissed her daughter. 她低下头吻了她的女儿。
7 press v. 压；按；推；挤；坚持；敦促n. 报章杂志，新闻工作者，新闻界She pressed a handkerchief to his nose.她用手绢捂住鼻子。
She pressed down hard on the gas pedal.她用力踩下油门踏板。
He is still pressing her claim for compensation.他仍坚持索赔。
The press was/were not allowed to attend the trial.庭审谢绝新闻采访。
8 switch n. & v. 用作名词表示―开关；转换‖。
用作动词表示―转换‖。
e.g. She made the switch from full-time to part-time work when her first child was born. 第一个孩子出生后，她就由全日工作改为非全日工作。
Press these two keys to switch between documents on screen. 按这两个键就可以在屏幕上的文件之间进行切换。
I can't work next week, will you switch with me? 下个周末我不能上班，咱俩换个班好不好？9 lack n. & v. 用作名词，表示：―缺乏；短缺‖；用作动词，表示：―缺乏；短缺；没有；不足‖。
e.g. a lack of food /money/skills 缺乏食物/金钱/技能The trip was cancelled through lack of interest. 因为缺乏兴趣这次旅行被取消了。
He lacks confidence. 他缺乏信心。
知识拓展：lacking adj. 缺乏；没有；匮乏；不足10 surroundings n.[pl.] 环境；surround v. 围绕；环绕surrounding adj. 周围的；附近的e.g. Everyone likes to work in pleasant surroundings. 人人都喜欢在愉快的环境中工作。
启发学生思考问题，哪些单词用作名词时常用复数形式11. catch/gain/get sight of 发现，看出lose sight of 看不见,忘记lose one's sight 失明at first sight 一见就；乍看起来at (the) sight of 一看见就…… At the sight of the teacher, the boy ran away.be in sight 看得见，在眼前The island is still in sight.out of sight 看不见Out of sight, out of mind.12. sweep up 打扫；清扫；横扫；涌向；快速地抱起e.g. He swept up the baby up into his arms. 他一把将孩子抱进怀里。
课文句型知识点：1Think about how many changes there have been in the last one thousand years.in the last one thousand years在过去一千年时间里in the last /past +时间表示在过去多长时间里,与之连用的时态用现在完成时态Great changes have taken place in our hometown in the last ten years.2.What changes do you expect to see in your life in one thousand years’ time.一千年之后你料想会发生什么变化。
Expect (sb.) to do sth.希望(某人)做某事I expect to be back within a week.I didn’t expect him to stay so long.hope to do something 希望做某事Joan’s hoping to study law at Harvard.wishwish to do something 希望做某事I wish to make a complaint.wish somebody something 希望某人…We wish them every happiness in their new home.3.Worried about the journey, I was unsettled for the first few days.我很担心这次旅行, 所以头几天心里总是不踏实。
worried about the journey 为过去分词作状语,在此处作原因状语。
worried adj. 焦虑的烦恼的担忧的;worrisome adj. 使人烦恼的,焦虑的4, As a result, I suffered from ―time lag‖. 结果我得了时间滞后症。
as a result (of): 作为……的结果,由于It snowed, as a result, she was late. 天下雪, 因此她迟到了。
result from 起因于……result in 导致某事,造成某事(=lead to)5.suffer from: to experience (something unpleasant, such as an illness), especially over a long period of time or habitually 患有(疾病等);为……所苦,因……而吃苦头。
She suffers from headache. 她患头痛病。
辨析: suffer与suffer fromsuffer 意为遭受苦痛,损失,忍受侮辱等,其宾语为pain, lose, grief, insult, punishment, wrong, hardship, injustice, discouragement, disappointment, setback, suffer from 遭受战争,自然灾害带来的苦难及患病之意。
suffer from the war / the flood/ a headache… 遭受战争,洪水之苦/患头病；suffer (from) cold and hunger 遭受寒冷和饥饿(派) suffering n. 痛苦,苦恼;劳苦,困难6. This is similar to the ―jet lag‖ you get from flying, but it seems you keep getting flashbacks from your previous time period.这种病有些像乘喷气式飞机高速飞行时所引起的时差反应那样，所不同的是,它意味着你的脑海里不停地从以前的时间段一直往回闪去。