Unit7 第四课时（PPT）- 【中职专用】 高一英语精品课件(外研版2021基础模块1）

英 英 语 语 Unit 7 When Disaster Strikes 第四课时 2 Grammar in Use Word building Find the rules ● Oh, we should also move the flowerpots off the balcony so they don’t blow off and hurt passersby. ● We can clean the streets and help replant some of the trees that were uprooted. ● Do you feel powerless at the thought of natural disasters? ● We can also have an earthquake preparation workshop. 英语单词的构成有一定的规律，常见的构词法有派生、合成和转化三类。了解构词法有助于我们更好地了解词义。本单元中这三类构词法均有体现： Do you know 1. replant，uproot，powerless，natural，preparation 等，这些词都是由某 一词根加上某前缀或后缀构成的，叫作派生词。前缀通常可以改变词义， 如 un-, im-, anti-, pre- 等；后缀通常可以改变词性或词义，如 -tion, -er, -al, -ful, -less 等。 2. flowerpot，earthquake，workshop，passerby 等，这些词是由两个或更 多单词组成的，叫作合成词。 3. hurt（动词）还可以变成hurt（名词），这种由一个词类变成另一个词 类的词，叫作转化词，如： These shoes are tight and hurt my feet. (hurt 为动词) I can’t describe the hurt and anger I feel. (hurt 为名词) Do you know Grammar in Use Word building Complete the dialogue with the proper form of the words in brackets. (1) Smoking is ________ (harm) to man’s health. (2) She is my favourite opera ________ (sing). (3) Ms Liu ________ (water) the flowers every day. (4) I’m sorry, sir. That flight is fully ________ (book) already. (5) We spent an ____________ (comfortable) night in the noisy hotel. For more practice harmful singer waters booked uncomfortable Grammar in Use Word building (6) After ___________ (graduate), Li Hui works as an engineer in a factory. (7) Lily was so ________ (care) that she left her wallet in the dining hall. (8) A ________ (nation) park will be built in my hometown this year. For more practice graduation careless national Grammar in Use Word building Grammar in Use Modal verb Find the rules ● We should make some preparations. ● I’m sure we can do something to help out. ● Yet how many lives could be saved if we did more to prevent natural disasters? 情态动词可以表示事实、情况或事件的不同确定程度，还可以表示说话人的观点、建议、指示和请求等。常见的情态动词有 can，could，must，may，might，should，need 等。 1. 情