(2019版)新人教版选择性必修第二册Unit 1Science and ScientistsBuild up your vocabulary ppt课件.pptx

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1、Unit 1 Science and scientistsBuild up your vocabulary1Master the meaning of prefix and suffix.Phrases: thanks to; subscribe to 32Words: raw; pure; substantial; decrease; transform; microscope; thinking; GoalsWork in groups. Discuss the meaning of the following prefix and suffix.Lead inre- micro- ory

2、- ial-dis- trans- ion- ology-再次微小表否定转变学表示名词表示形容词表示形容词decrease v. 减少减少1. The demand for tea is on the decrease each year. 茶叶的需求量逐年递减。2. Last year there was a 20 % decrease in his earnings. 去年他的收入减少了20%。Language point【拓展拓展】decrease to 减少到decrease by 减少了on the decrease 在减少there is a decrease in 在方面有所减少

3、Language pointsubscribe to 同意;赞同;定期订购同意;赞同;定期订购1. Which journals does the library subscribe to? 图书馆订有哪些报刊?2. I heartily subscribe to that sentiment. 我十分赞同那个观点.Language point【拓展】【拓展】agree : 普通用词,侧重指对某事同其他人有相同的意见或想法。consent : 指同意别人的请求、建议或满足他人的愿望,着重意愿或感情,常和to连用。approve : 侧重对认为正确或满意的事表示赞同或批准。作不及物动词用时,常与

4、of连用。Language pointthanks to 幸亏;由于幸亏;由于1. I have given thanks to God for delivering me from that pain. 我感谢上帝把我从那种痛苦中拯救出来。2. Thanks to you, I was saved from drowning.幸亏你, 我才没有淹死。Language point【拓展拓展】due to : 用于较庄重的书面语中,侧重起因于,在句中多作表语,有时作状语。owing to : 可以和due to换用,但在句中多作状语,也可作表语。because of : 着重某种原因的理由,在句

5、中通常作状语。thanks to : 突出一种感激之情,含多亏意味。Language pointContent1. Find the words from the previous pages with the following prefixes or suffixes.Suffix Words Suffix Wordsory -ialion- ology Prefix Words Prefix Words re- micro dis- trans-transformmicroscoperemoveinitialepidemiologyinterventioncontradictorydis

6、ease2 Make phrases by combining the words in the left box with those on the right. Then complete the sentences using these phrases. subscribe suspect blame link to of for1 Many scientists _ the view that it is human activity that has caused global warming.2 He was to _ the accident because he drove

7、on the wrong side of the road.3 The man _ being behind the robbery was seen crossing the street.4 Since heart disease is often _ our lifestyle choices, we need to make healthy living an important part of our lives.subscribe to blame forsuspected oflinked to3 Replace the underlined parts with suitabl

8、e words from the box. raw a household name substantial statistics handle1 It is not unusual for an athlete to be well known while he is active, and quickly forgotten when his athletic career is over. 2 Im sure shell deal with the changes very well because shes very adaptable.3 He was ready to serve

9、dinner to his friends when he realised that he had forgotten to turn on the oven and the meat was not cooked yet.4 He used his great influence to change the thinking of the scientific community on this issue.5 Scientists have collected more data than expected to prove the theory.raw handlestatistics

10、 a household name substantial4. Read this passage about medical science. Complete it using the correct forms of the words in the box. infection multiple decrease severe transform proof blame substantialUK scientists believe they may have found a way to fight the common cold. It blocks a key protein

11、in the bodys cells that is to _for the spread of cold-causing virus. Targeting the host rather than the _ was a bit non-traditional but made sense because it was tricky to target the virus. Cold-causing virus are not only of _ kinds, they also _ rapidly, meaning they can quickly develop resistance t

12、o medicine. blametransformmultiply infectious Researchers are working on making a form of medicine that can be taken directly into ones lungs, to _the chance of side effects. Though these scientists have made _ advances in their research, further _ is needed to make sure such drugs are not so _ that they harm the body.decreasesubstantialproof severe 3. 预习 Unit 1-Discovering Useful Structures.1. Recite new words and phrases.2. Find more prefix and suffix and figure out their meaning. Bye-bye!

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