Unit1语气转换课件人教版八年级英语下册

疑问语气（interrogativemood）陈述语气（declarativemood）一、陈述句转疑问句的语法要点陈述句：He

is

ateacher.陈述句：She

can

swim.陈述句：They

live

here.

（无助动词）→

疑问句：Is

heateacher?→

疑问句：Can

sheswim?→

疑问句：Do

theylivehere?陈述句：He

ate

lunch.（过去时，无助动词）→

疑问句：Did

heeatlunch?1.一般疑问句（Yes/NoQuestions）规则：将助动词（auxiliaryverb）或情态动词（modalverb）提前到

前；主语若无助动词，需添加

do/does/did。注意：第三人称单数（he/she/it）在现在时中需用

does，动词恢复原形：She

likes

coffee.过去时中用

did，动词恢复原形：He

went

home.→

Does

she

like

coffee?→

Did

he

go

home?2.特殊疑问句（Wh-Questions）规则：疑问词（what,where,when,why,how,who等）+一般疑问句结构。陈述句：She

bought

abook

yesterday.陈述句：Themeeting

starts

at3PM.→

疑问句：What

didshebuyyesterday?→

When

didshebuyabook?→

疑问句：Whattime

doesthemeetingstart?注意：疑问词作主语时，无需助动词，直接保留陈述句语序：陈述句：John

brokethewindow.→

疑问句：Who

brokethewindow?3.反义疑问句（TagQuestions）规则：陈述句+反义短疑问（助动词/情态动词+代词）。陈述句：It

is

raining.陈述句：You

can’t

swim.陈述句：She

likes

cats.→

疑问句：Itisraining,

isn’tit?→

疑问句：Youcan’tswim,

canyou?→

疑问句：Shelikescats,

doesn’tshe?注意：陈述句为肯定，反义疑问用否定；陈述句为否定，反义疑问用肯定。

（前肯后否，前否后肯）主语必须转换为代词：

陈述句：Tom

is

here.→Tomishere,

isn’the?二、常见错误及注意事项忽略助动词：❌

Likeyoucoffee?

忘记动词原形：❌

Doesshe

likes

coffee?

疑问词位置错误：❌

Whereshewent?

反义疑问句不一致：❌

Heislate,

ishe?

→✅

Do

youlikecoffee?→✅Doesshe

like

coffee?→✅

Wheredidshego?→✅Heislate,

isn’the?练习1：将陈述句转为一般疑问句ShespeaksFrench.Theywenttothepark.Youhavefinishedthereport.→

DoesshespeakFrench?→

Didtheygotothepark?→

Haveyoufinishedthereport?练习2：用疑问词提问Heboughta

newcar.Thetrainarrives

at8AM.Alice

calledyouyesterday.→

Whatdidhebuy?→

Whendoesthetrainarrive?→

Whocalledmeyesterday?练习3：补充反义疑问句You’recomingtotheparty,

you?Shedoesn’tlikespicyfood,

she?TheyhavevisitedParis,

they?aren’tdoeshaven’t掌握陈述句转疑问句的关键在于：判断是否需要添加助动词（do/does/did）；调整语序（助动词/情态动词提前）；根据疑问类型选择疑问词或反义短问。课文实战练习将陈述句转换为一般疑问句（Yes/NoQuestions）示例：陈述句：Hehasatoothache.→疑问句：Doeshehaveatoothache?Sheshouldtakehertemperature.Theywenttothedentistyesterday.Youhaveasorethroat.Heneedstoliedownandrest.→___________________________?→___________________________?→___________________________?→___________________________?Doesheneedtoliedownandrest?Shouldshetakehertemperature?Didtheygotothedentistyesterday?Doyouhaveasorethroat?根据答语写出疑问句（Wh-Questions）答语：Thematterisasoreback.→疑问句：What’sthematter?答语：Sheshoulddrinkhottea.答语：Hehurthislegplayingsoccer.答语：Theyhaveafever.答语：Myadviceistoputmedicineonthecut.→___________________________?→_______________________