1、Unit 2 Saving the Earth Topic 1 Pollution has caused too many problems.Section A 第一页，共20页。Review Bee:n蜜蜂(mfng)butterfly:n 蝴蝶(hdi)chemical：adj 化学(huxu)的 Mess：n混乱 factory：n 工厂 Shame：n羞愧 Several：adj几个 若干（few)Pollute:v 污染 pollution Waste：v 浪费 adj 浪费的 Villager：n 村民 Pourinto：v 倒入.第二页，共20页。Welcome to The W
2、est Hill 第三页，共20页。Two years ago There were lots of flowers and grass.We could see bees and butterflies dancing.bee butterfly The West Hill was beautiful The air was fresh and the water was clean.第四页，共20页。Have you ever had a picnic?Kangkang,Jane,Maria and Michael are planning a picnic for Sunday.They
3、 will go to the West Hill.第五页，共20页。The flowers and grass have gone!Oh,What a mess!Look!There are several chemical factories pouring waste water into the stream.=have disappeared.第六页，共20页。1b Listen to 1a and mark the words with P(Past)or N(Now)._ beautiful _ butterflies _ dirty _ grass _ terrible _ f
4、actory_ bees _ fresh _ clean _waste water P P N P N N P P P N 第七页，共20页。1c Complete the sentences in the table.beautiful place lots of flowers and grass fresh and the water was clean bees and butterflies dancing The flowers and grass so dirty terrible chemical factories waste water Everything 第八页，共20
5、页。Lets talk!Look at the pictures.Try to describe them.第九页，共20页。Two years ,it place.There .The air and the water ,and you But now everything .The flowers and grass .The water and smells .What here?Look,there are several chemical factories the stream.Oh,!ago was a beautiful were lots of flowers and gr
6、ass was fresh was clean could see bees and butterflies dancing has changed have gone is so dirty pouring waste water into What a shame terrible has happened What a shame 第十页，共20页。Language points What a shame!/what a mess!You can see bees and butterflies dancing.There are several factories pouring wa
7、ste water into the stream.感叹句 see sb doing 看见某人(mu rn)正在做 Pour.into 把倒入 多可惜(kx)啊！一团糟！see sb do 看见(kn jin)某人做了 第十一页，共20页。There bedoing sth 有在做某事 e.g._ _ some people _(wait)for the bus at the bus stop.There are waiting There are some chemical factories pouring waste water into the stream 第十二页，共20页。The
8、re bedoing sth 有在做某事 There is a boy swimming in the ocean There are some butterflies and bees dancing 第十三页，共20页。Present perfect（现在（现在(xinzi)(xinzi)完成时）完成时）?花和草都消失(xiosh)了！?这儿(zhr)发生了什么?一切都变了。结构：Have/has+done（动词过去分词）常常与always，yet,already,never,ever,just,before 搭配 E.g.I have found my pen already.I hav
9、ent found my pen yet.I have been to the Great Wall.He has done his homework.Has he done his homework?The flowers and grass have gone!What has happened here?Everything has changed.第十四页，共20页。单项选择(xunz)()1.Look!There are some boys_ on the playground.A.play football B.are playing football C.playing foot
10、ball D.plays football()2.Im sorry I cant go shopping with you.I am ill._ A.What a mess!B.What a shame!C.What a pity!D.B and C()3.Dont _ water.We must save every drop of it.Sorry,I wont do it again.A.waste B.throw C.play D.leave C D A 第十五页，共20页。用所给动词的适当形式用所给动词的适当形式(xngsh)(xngsh)填空。填空。1.When I entered
11、 the room,I saw Maria _(read)a Chinese book.2.What a shame!The flowers and trees in the park _(go).3.Everything _(change)in the past few years.4.Pandas dont have enough bamboos _(eat)now because of the pollution.5.Where have they been?They _(be)to the Great Wall.They _ (have)a good time there the da
12、y before yesterdayreading have gone has changed to eat have been had 第十六页，共20页。1.Express exclamation:What a mess!What a shame!2.Know the differences between Simple Past and Present perfect.It was a beautiful place.Everything has changed.1.Some words:bee,butterfly,mess,shame,several,pour,waste,destroy,pollute,goodness 2.Some phrases:see sb.doing sth.pourinto.3.Some sentences:There aredoing 第十七页，共20页。What have we done?No Clean water to drink Dirty air Green house effect Melting融化融化(rnghu)(rnghu)ice Homeless animals 第十八页，共20页。Save the earth,our only home 第十九页，共20页。Thank you 第二十页，共20页。
