1、Unit3Teenagersshouldbeallowedtochoosetheirownclothes重點(diǎn)詞組：1.gettheirearpierced2.sodowe3.goshoppingwithsb4.gettoclasslate5.talkaboutsth6.wouldliketodo7.concentrateon8.begoodf9.learnfromeachother10.fexample11.onceaweek12.as

2、muchas13.achieveone’sdream14.thinkabout15.beseriousabout16.practicedoing17.careabout18.bestrictwith19.gettodoingsth20.It’sagoodideafsbtodo重點(diǎn)語(yǔ)法：1.“語(yǔ)態(tài)”表示主語(yǔ)和謂語(yǔ)動(dòng)詞之間的關(guān)系。英語(yǔ)中有“兩態(tài)”的說(shuō)法，即主動(dòng)語(yǔ)態(tài)和被動(dòng)語(yǔ)態(tài)，本單元中反復(fù)出現(xiàn)的shouldbeallowed就是一個(gè)含有情態(tài)動(dòng)

3、詞（should）的被動(dòng)語(yǔ)態(tài)。2.被動(dòng)語(yǔ)態(tài)的構(gòu)成含be動(dòng)詞的Theofficeiscleanedeveryday.Theofficewascleanedyesterday.Theofficeisbeingcleaned.Theofficehasbeencleaned.根據(jù)上例，我們可以看出：一般現(xiàn)在時(shí)的被動(dòng)語(yǔ)態(tài)為：主語(yǔ)amisare過(guò)去分詞（1）當(dāng)主動(dòng)結(jié)構(gòu)中的賓語(yǔ)是反身代詞和互相代詞時(shí)，不能用被動(dòng)語(yǔ)態(tài)Weoftenhelpeachoth

4、er.(2)當(dāng)謂語(yǔ)是表狀態(tài)的及物動(dòng)詞（haveliketakeplacebelongto）Iliketheseflowers.Iwillhaveameeting.5.twelveyearolds相當(dāng)于twelveyearoldteenargers12歲的孩子數(shù)詞和一個(gè)相應(yīng)的名詞單數(shù)用“”連接起來(lái)，可以構(gòu)成一個(gè)合成形容詞。常見(jiàn)的還有：twomonthhoilday兩個(gè)月的假期asixtypoundstone一塊60磅的石頭6.getthe

5、irearspierced，結(jié)構(gòu)是gethaven.pron.ved意思是“叫讓請(qǐng)別人做某事Iwanttogetmycoatmended.7.allowsbtodosth允許某人做allowdoingsth允許做WeshouldallowteenagerstosurftheInter.Beallowedtodo被允許做某事Heisallowedtostayupuntil11:00p.m.Weshouldbeallowedtotaketi