人教版初中英語七年級下冊 Section A 2d-3c（全國一等獎）

SectionA2d—3c祈使句的類型及其否定形式祈使句是表示請求、命令、建議等的句子。句子中通常不出現(xiàn)主語，謂語動詞一律用原形。根據(jù)句子語氣的強弱，句末用感嘆號或句號。注意有時可在祈使句的句首或句尾加上please，使語氣顯得客氣、有禮貌。祈使句Openthewindow,please!Bequiet,please!Let’sgonow!祈使句肯定形式否定形式Do型Be型Let型Do型Be型Let型No型Goandbuyhimapen!Putthebooksinyourbag!Writedownyourname!Saythatagain!Bekindtoothers!Bequietwhensittinghere!Lethimgo!Letherplaycomputergames!Letthemgobacknow!Do型Be型Let型祈使句的肯定形式Goandbuyhimapen!Putthebooksinyourbag!Writedownyourname!Do型祈使句的否定Don’tDon’tDon’t在Do型祈使句的肯定句式前加Don’t。Don’twritedownyourname!Don’tgoandbuyhimapen!Don’tputthebooksinyourbag!小結(jié)Bekindtoothers!Bequietwhensittinghere!Be型祈使句的否定Don’tDon’tDon’tbekindtoothers!Don’tbequietwhensittinghere!Don’tbelateforclass!小結(jié)在Be型祈使句的肯定句式前加Don’t。Let型祈使句的否定Lethimgo!Letherplaycomputergames!Letthemgobacknow!Don’tDon’tDon’tDon’tlethimgo!Don’tletherplaycomputergames!notLethimnotgo!Lethernotplaycomputergames!notDon’tletthemgobacknow!Letthemnotgobacknow!not小結(jié)在Let型祈使句的肯定句式前加Don’t;在Let+賓格+(not)+動原No型祈使句“No+不可數(shù)名詞或可數(shù)名詞復數(shù)/動詞?ing形式”表示禁止或規(guī)勸，常用于公共場所。e.g.Nophotos!禁止拍照！

Nosmoking！

禁止吸煙！

Noparking!禁止停車！

Nofishing!禁止釣魚！

No

littering.

禁止亂扔垃圾！Writetherulesfortheschoollibrary.LibraryRules1.2.3.4.Don’ttalk.

Don’teat.

Don’tlistentomusic.

Don’ttakephotos.

方法指導：1.由圖示可知都是一些禁止類的祈使句。2.可知應用“Don’t+動詞原形”句子。3.No+名詞/V+ing形式，表示禁止或規(guī)勸，多用于公