单数句变复数句是七年级英语试题中的一个题型.记住以下几要素即可迎刃而解英语复数句子怎么改:
1、人称代词主格单数变成相应的人称代词主格复数英语复数句子怎么改,即i-we;you-you;she/he/it-they
Sheisagirl.-theyaregirls.
2、am,is变为are.
iamastudent.wearestudents.
3、不定冠词a/an要去掉或者变为some,any(肯定句及希望得到对方肯定回答的疑问句用some,否定和疑问句用any)如:
Heisaboy.theyare(some)boys.
4、普通单数名词要变为复数形式。
itisacat.theyarecats.
5、指示代词this,that变为these,those.如:
thisisabook.thesearebooks.
6、man,woman做定语修饰可数名词时,要在“数”上与被修饰名词保持一致,但其他名词修饰名词表示“性质”时,不作变化。如:
thisisawomandoctor.
theyarewomendoctors.
thisisanornagetree.
theyareornagetrees.
7、反身单词也要变相应的复数形式。
myself-ourselvesyourself-yourselveshimself/herself/itself-themselves
iamteachingmyselfcomputer.
weareteachingourselvescomputer.
8、物主代词由单数变复数:
名词性物主代词:mine-oursyours-yourshis/hers/its-theirs
形容词性主代词:my-ouryour-youhis/her/its-their
thisbookismine.—thebooksareours.
thisisherpen.–thesearetheirpens.
一般情况下,形容词性物主代词在单数句变复数句时不变。当句中形容词性物主代词与句中的主语一致时,形容词性物主代词应随主语人称的变化而变化,仍要保持一致。
thisismypen.thesearemypens.
Helikeshisbike.theyliketheirbikes.
注意:单数句变为复数句时,句中的形容词、定冠词、副词、疑问词、介词短语和感叹词等保持不变。例如:whoisshe?whoarethey?
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