牛津譯林版八年級英語上冊《Birdwatching》PPT課件(第3課時)，共17頁。
B What do birdwatchers do?
B1) Match the words on the left with the meanings on the right.
1 provide (line 3) ______ a stop something from happening
2 perfect (line 3) ______ b know
3 lead to (line 10) ______ c a person who is travelling or visiting a place
4 prevent (line 13) ______ d give something to someone or something else
5 tourist (line 17) ______ e the best
6 understand (line 19) ______ f have something as a result
知識點
in order to “以便，為的是”
in order to后跟動詞原形，引導(dǎo)目的狀語，可以放在句首或句中。
eg：In order to catch the early bus, he got up early this morning.
＝ He got up early this morning in order to catch the early bus.
為了趕上早班車，他今天早晨起得很早。
in order to do sth.的否定形式為in order not to do sth.，意為“為了不做某事”。
eg：In order not to miss the chance, he gave up his holiday.
為了不錯過這個機會，他放棄了自己的假期。
less and less 越來越少
less and less 后跟不可數(shù)名詞， 如：less and less money
fewer and fewer 越來越少，后面跟可數(shù)名詞， 如：fewer and fewer books
more and more越來越多，既可以跟可數(shù)名詞，也可以跟不可數(shù)名詞， 如：more and more people/ time
prevent /prɪ'vent/ vt.防止，預(yù)防
eg: Nothing can prevent her going to school.
什么也不能阻止她上學(xué)。
prevent sb. from doing sth.意為“阻止某人做某事”。prevent還可用stop或keep替換。
eg: The heavy rain prevented (stopped/kept) us from going forward. 大雨阻止了我們前行。
課堂練習(xí)
一、用方框中的單詞或短語的適當(dāng)形式填空
1．His hard work ____________ his success.
2．The workers are very busy _______________．
3．These years, _______________ people understand that it's necessary to save wild animals.
4．This is a ________ of road accidents.
5．Some students are playing in the playground, ________ some students are doing their homework in the classroom.
二、根據(jù)漢語完成句子
6. 熬夜會導(dǎo)致健康問題。
Staying up late will ________ ________health problems.
7. 你最好盡快阻止你兒子玩火。
You'd better ____________your son_______ _______ ________fire as soon as possible.
8．我們的報告將會使更多的人理解保護鳥類的重要性。
Our report will make more people __________ ______ ____________ _______ __________ ________.
9. 這個森林為野生動物提供了完美的庇護所。
This forest _______ _______ _______ ________wildlife.
10．為了找到足夠的食物，很多鳥兒飛到這里作短暫停留。
________ ________ ________find enough food, many birds fly here _______ _______ _______ _______．
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關(guān)鍵詞：《Birdwatching》PPT課件免費下載，.PPT格式
