英語(yǔ)八年級(jí)上冊(cè)Unit8祈使句的用1

教學(xué)目標(biāo)★學(xué)習(xí)祈使句的定義?！飳W(xué)習(xí)祈使句的表現(xiàn)形式。

●肯定結(jié)構(gòu):1.Be型(即:Be+其它成分)。2.Do型(即:動(dòng)詞原形+其它成分)。3.Let型(即:Let+賓語(yǔ)+動(dòng)詞原形+其它成分)?！穹穸ńY(jié)構(gòu):1.Be型：don’tbe+其他型：2.Do型:don’t+動(dòng)詞原形3.Let型：don’tlet+其他letsbnot+動(dòng)詞原形Watchandthink用于表達(dá)建議用于表達(dá)請(qǐng)求_______thedoor,please.Open_____________basketball.Let’splay用于表達(dá)警告用于表達(dá)命令_________yourclothes.Puton________careful.Be用于表達(dá)禁止用于表達(dá)勸告______________TV.Don’twatch__________withtheknife.Don’tplay祈使句（ImperativeSentence）定義：用于表示請(qǐng)求、建議、命令、勸告警告、禁止等的句子叫做祈使句.GuessinggameIfheisyourfriend,whatwillyousaytohim?Bequiet,please.Don'tbeshy.Be型祈使句●肯定結(jié)構(gòu):(即:Be+形容詞或名詞+其他)如：Becareful!Befriendlytoyourclassmates.

●否定結(jié)構(gòu):don’tbe+其他如：Don’tbenoisy.

Cleantheblackboard,please.Don'ttalkinclass.Do型祈使句●肯定結(jié)構(gòu):(即:動(dòng)詞原形(+賓語(yǔ))+其它成分)。如:Gothisway,please.●否定結(jié)構(gòu):don’t+動(dòng)詞原形如：Don’tplaywiththefire.

Let’smakefruitsalad.Don'tlethimsleep.Lethimnotsleep.●肯定結(jié)構(gòu):(即:Let+賓語(yǔ)+動(dòng)詞原形+其它成分)。如:Letmehelpyou.●否定結(jié)構(gòu):

(即:Let+賓語(yǔ)+not+動(dòng)詞原形+其它成分)。Lethernottalkinclass.(即:Don’tLet+賓語(yǔ)+動(dòng)詞原形+其它成分)。Don’tlethimgoout.Let型祈使句現(xiàn)學(xué)活用()1.---Please______toreturnmybookbyFriday.I'lluseitonSaturday.---Noproblem.I'llfinishreadingitonThursday.A.don'tforgetB.nottoforgetC.notforgetD.forgetnotto()2.Don'tworry.Letme________youwithyourmath.A.helpsB.helpC.helpingD.helped()3.______quiet.Thebabyissleeping.A.AreB.BeC.Being