定语从句只用that

当先行词是everything,anything,nothing（something除外）,all,none,few,little,some等不定代词时，或当先行词受every,any,all,some,no,little,few,much等词修饰时。如：

HaveyousetdowneverythingthatMrLisaid?

Thereseemstobenothingthatisimpossibletohimintheworld.

注意：当先行词指人时，偶尔也可用关系代词who。如：

Anymanthat/whohasasenseofdutywon’tdosuchathing.

Allthegueststhat/whowereinvitedtoherweddingwereimportantpeople.

2.当先行词被序数词修饰时。如：

ThefirstAmericanmoviethatIwatchedwastheTitanic.

3.当先行词被形容词最高级修饰时。如：

ThisisthebestmuseumthatIhavevisitedallmylife.

4.当先行词被thevery,theonly,thefirst/last等修饰时。如：

Sheistheonlypersonthatunderstandsme.

Afterthebigfire,theoldcaristheonlythingthatheowns.

注意：当先行词指人时，偶尔也可以用关系代词who。如：

WangHuaistheonlypersoninourschoolwhowillattendthemeeting.

5.当先行词前面有who,which等疑问代词时。如：

Whoisthemanthatisstandinginfrontofthecrowd?

WhichistheroomthatMrWanglivesin?

6.当先行词为人与动物或人与物时。如：

Lookatthemanandhisdonkeythatarewalkingupthestreet.

7.当先行词是reason,way（方法）等词时，关系代词常用that代替inwhich,forwhich,why,也常可省略。如：

Sheadmiredtheway（that）theysolvedthequestions.定语从句中只用WHO,不用that的情况一卡通定语从句中只用WHO,不用that的情况1先行词是one,ones或anyone时;先行词为those或被those修饰，指人时Onewho

doesnotworkhardwillneversucceed.Anyonewho

breaksthelawshouldbepunished.Sheis

theonlyone

ofthestudents

who

hasbeentotheUSA.Thosewho

learnnotonlyfrombooksbutalsothroughpracticewillsucceed.2在以therebe…的句子中，先行词为人时Thereisa

comrade

outside

who

wantstoseeyou.3当定语从句中又有定语从句,且先行项都为人时Thestudent

thatwonthefirstprizeisthemonitorwho

workshard.4当指人的先行项被一些指物的名词修饰时There'sonlyone

studentintheschool

who

Iwanttosee.Doyouknowthewomaninbluewith

ababyonherbackwho

isworkinginthefields?5在非限制性定语从句中指人Imetafriendofmineinthestreet,who

hadjustcomefromAmerica.6定语从句中有插入语时,且先行项为人时Jacksonisaman

whoIbelieve

ishonest.1.先行词是one,ones或anyone时;先行词为those或被those修饰，指人时Onewho

doesnotworkhardwillneversucceed.

Anyonewho

breaksthelawshouldbepunished.

Sheis

theonlyone

ofthestudents

who

hasbeentotheUSA.Thosewho

learnnotonlyfrombooksbutalsothroughpracticewillsucceed.4.当先行词有thevery,theonly,thesame等修饰时，通常用that：ThisistheonlyexamplethatIknow.我知道的例子只有这一个。Thosearetheverywordsthatheused.那是他的原话。2.在以therebe…的句子中，先行词为人时Thereisa

comrade

outside

who

wantstoseeyou.3.当定语从句中又有定语从句,且先行项都为人时Thestudent

thatwonthefirstprizeisthemonitorwho

workshard.4.当指人的先行项被一些指物的名词修饰时There'sonlyone

studentintheschool

who

Iwanttosee.

Doyouknowthewomaninbluewith

ababyonherbackwho

isworkinginthefields?5.在非限制性定语从句中指人Imetafriendofmineinthestreet,who

hadjustcomefromAmerica.6.定语从句中有插入语时,且先行项为人时Jacksonisaman

whoIbelieve

ishonest.5.当先行词有形容词最高级或序数词(包括last,nex