The+imperative+sentences 人教新目標(biāo)Go+For+It!英語(yǔ)八年級(jí)上冊(cè)

課題：Theimperativesentences學(xué)科：初中英語(yǔ)Module5Unit9Becareful簡(jiǎn)單祈使句的學(xué)習(xí)imperativesentences1.Understandthedefinitionandstructureofimperativesentences.2.Knowtheimperativesentencesthatcanbeusedinreallife.教學(xué)目標(biāo)Keepslient!Bequiet!GuessingGameGuessingGameDon’tsmoke!Nosmoking!Don’teatinclass!GuessingGameWhataretheimperativesentences?什么是祈使句？祈使句是用來(lái)表達(dá)命令、請(qǐng)求、勸說(shuō)、警告、禁止等的句子，并通常省略主語(yǔ)“you”。命令請(qǐng)求勸說(shuō)警告禁止1.Do型(即:動(dòng)詞原形(+賓語(yǔ))+其它成分)

Closethedoor,please!2.Be型(即:Be+表語(yǔ)(名詞或形容詞)+其它成分)

Becarefulwhenyouarecrossingtheroad!Beagoodboy!3.Let型(即:Letsb.dosth.)

Letmehelpyou!

Let'sgoshopping!

祈使句的肯定結(jié)構(gòu)

1.Do型和Be型的否定式都是在句首加don’t構(gòu)成。

Don'tbelateforschool!

Don’truninthehallway!祈使句的否定結(jié)構(gòu)祈使句的否定結(jié)構(gòu)

2.Let型的否定式有兩種:①“Don‘tletsb.dosth.”②“Letsb.notdosth.”。Don’tlethimthrowrubbish.=Lethimnotthrowrubbish.

祈使句的否定結(jié)構(gòu)

3.有些可用no開(kāi)頭,用來(lái)表示禁止性的祈使句。

Nosmoking!禁止吸煙!Nophotos!禁止拍照！祈使句的否定結(jié)構(gòu)4.Never代替don’t來(lái)加強(qiáng)語(yǔ)氣。Nevergiveup!Neverdothatagain!Be

!It’sdangerous.Don’t

thetree.Don’t

thewire.It’sdangerous.It’sdangerous.Don’trun

!Don’t

.It’sdangerous.climb,careful,playwithfire,touch,downstairs課堂練習(xí)careful

climbtouchdownstairsplaywithfire祈使句,無(wú)主語(yǔ),只用動(dòng)詞就可以.表示請(qǐng)求或命令,加上please表客氣。如果變成否定句，Don’t開(kāi)頭是規(guī)律。Notalking!是警示，祈使句用法要牢記。課堂小結(jié)1.Reviewtheimperativesentenceslearnedtoday.2.Lookforimperativesentencesthat