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2019-2020年高一英语Unit4 Astronomy the science of the stars：Words and Expressions教案姓名：_ 班级：_ 学习目标：让学生掌握第四单元的单词及短语发音、拼写及中文意思。学习重点：第四单元单词表中的黑体单词及短语。学习难点：掌握以下单词及短语预习案：atmosphere, multiply, satellite, unlike, climat, gravity, theory, crash, spaceship, pull, fundamental, chain, astronomy, atom, in time,lay eggs, cheer up, give birth to, in ones turn, break out, prevent.from, now that,watch out预习案I. Read the new words and expressions in Unit4 and try to master the black words and expressions.II. 掌握下例重点单词的发音并写出中文意思。astronomy/strnm/_religion/rldn/_theory/r/_atom/tm/_violent/valnt/_atmosphere/tmsf/_fundamental/,fndmentl/_acid/sd/_multiply/mltpla/_oxygen/ksdn/_dioxide/daksa/_biology/bald/_gravity/grvt/_satellite/stlat/_physicist/fzsst/_climate/klamt/_III. 掌握下例短语并写出中文意思。in time_lay eggs_give birth to_in ones turn_prevent.from_cheer up_now that _break out_watch out_get the hang of_新授探究案：I、检查预学案的完成情况（请学生齐读或个别读预学案中的重点单词及抽查短语掌握）。强化音标，突破重点单词的读法。II、听录音跟读第四单元的单词。III、自读一遍，然后小组内互相检查读的是否正确。IV、抽查部分学生读的情况。V、强调如下词的词形转换。1. _ n. 天文学 _ n. 天文学家2. _ n. 系统；体系；制度 _ adj. 系统的;涉及全系统的3. _ n. 宗教；宗教信仰 _ adj. 宗教的 4. _ adj. 猛烈的；激烈的；强暴的_ n.激烈；猛烈5. _ adj. 有害的 _ adj.（反义词）无害的 _ n.伤害6. _ n. 反应；回应 _ v. 反应；起作用7. _ vi. 存在；生存 _ n. 存在；实有8. _ n.出席;在场 _ n.当前 _ adj. 缺席的;不到场的9. _ n. 谜；难题；vt.&vi （使）迷惑;(使)为难 _ adj.感到迷惑的 _ adj.令人迷惑的10. _ n.物理学家；_ n物理.； _ adj.身体的当堂检测案：I. 让单个学生读单词。II、根据汉语提示或用所给词的适当形式完成句子。1It cost him more than one_(十亿) dollars to plete the project.2“What happened？” Johns mother asked him in a_(温和的) voice.3Before the Earths protective_(大气层) was formed，there was no life except in the sea.4With the_(引力) of the moon and the sun each day，tides (潮汐) roll in and roll away.5Manmade_(卫星) are used for sending and receiving messages.6Smoking_(乘，增加) the risk of heart attacks and other health problems.7Eating too many desserts can be_(有害的) to ones teeth.8Global warming and_(气候) change problems are perhaps the greatest threats to our planet.9According to the_(理论) of relativity (相对论)，nothing can travel faster than light.10Most of the evidence had been destroyed._(因此，于是)，it was almost impossible to prove him guilty.课后练习案：I. 词组翻译。1、阻止_2、下蛋_3、轮到某人；接着_4、熟悉；掌握；理解_5、密切注视；当心；提防_6、突发；爆发_7、及时，终于_8、产生；分娩_9、感到高兴；感到振奋_10、既然_II.动词填空: multiply，exist，prevent，puzzle，block，crash，cheer，float，watch1._very fast，rabbits soon became the largest family of all the animals in this woods.2._ at the _ result，he stood there，not knowing what to do.3. No one can _this plan from being carried out.4.Does life _ on other planets?5.Many roads _after today，s heavy snow，so you，d better not go out.6.It was reported that a plane _ soon after it took off，causing 10 deaths.7. Give Mary a call，she needs _ up.8.I_weightlessly around in our spaceship cabin watching the earth bee smaller and the moon larger.9. _out for his temper！Hes not easy to deal with.学后感：答案2.单词天文学 宗教，宗教信仰理论；学说 原子激烈的;猛烈的;强暴的大气层，气氛基本的，基础的酸乘，增加氧二氧化物生物学万有引力，重力卫星，人造卫星物理学家气候3.词组及时，终于下蛋产生；分娩轮到某人；接着阻止感到高兴；感到振奋既然突发；爆发密切注视；当心；提防熟悉；掌握；理解4. 词形转换：1.astronomy; astronomer 2.system; systemic 3.religion; religious 4.violent; violence 5.harmful; harmless; harm 6.reaction; react 7.exist; existence 8.presence; present; absent 9.puzzle; puzzled; puzzling 10. physicist, physics, physicalII、根据汉语提示或用所给词的适当形式完成句子。1.billion2gentle3 atmosphere4 pull5 satellites6 multiplies7 harmful8 climate9theory10 Thus词组翻译。1、prevent.from2、lay eggs3、in ones turn4、get the hang of_5、watch out6、break out7、in time8、give birth to9、cheer up10、now that动词填空:1.Multiplying 2.Puzzled；puzzling3. prevent 4.exist 5.are blocked 6.crashed7. cheering 8. floated 9. Watch
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