内容正文:
Unit 3 Language in use
语法专练
1.I'm your teacher.
2.She's my friend.
3.Her English name is Lucy.
4.His English name is Henry.
语法详解
★动词be说明身份、年龄、状态等
1.动词be的一般现在时形式
动词be的一般现在时有三种形式:am,is和are,be动词的形式随着句子主语的变化而变化。如:
主语
动词be的形式
例句
I
am
I am a girl.
you/they/we/名词复数
are
We are her students.
he/she/it/名词单数/不可数名词
is
He is in Class 1.
2.动词be的一般现在时的否定形式和疑问形式
◆动词be的否定形式是在动词be后直接加not。缩写形式:isn't=is not, aren't=are not。
注意:am not不能缩写;This is不能缩写。如:
◇I am not a boy.=I'm not a boy.
◇You are not a student.=You aren't a student.
◇This is not a book.=This isn't a book.
◆动词be的一般现在时的疑问句形式是将动词be提至句首。如:
◇—Are you a teacher? —Yes, I am./No, I'm not.
◇—Is this a ruler? —Yes, it is./No, it isn't.
★人称代词和物主代词
1.人称代词
人称代词不仅指人,也可指物。人称代词分为主格和宾格,人称代词有人称、数和格的变化。
人称
单数
复数
主格
宾格
主格
宾格
第一人称
I
me
we
us
第二人称
you
you
you
you
第三人称
he, she, it
him, her, it
they
them
注意:人称代词的主格在句中作主语,宾格作宾语或表语。如:
◇We are good friends.我们是好朋友。
◇I know him.我认识他。
2.物主代词
物主代词分为形容词性物主代词和名词性物主代词。
人称
单数
复数
形容词性
名词性
形容词性
名词性
第一人称
my
mine
our
ours
第二人称
your
yours
your
yours
第三人称
his, her, its
his, hers, its
their
theirs
注意:形容词性物主代词在句中作定语,相当于形容词,后跟名词;名词性物主代词在句中作主语、宾语、表语等,相当于名词。如:It's her book, not mine.那是她的书,不是我的。
强化训练
一、 单项填空。
( A )1. schoolbags are new, but are old.
A.Their; ours B.Their; our
C.Theirs; our D.Theirs; ours
( B )2. should listen to teacher carefully.
A.Your; you B.We; our
C.She; they D.His; his
( B )3.—What class you in? —I in Class Three.
A.am; is B.are; am
C.are; are D.is; am
( C )4.My father and my mother both teachers.
A.am B.is
C.are D.be
( C )5.Mary has a brother, and name is Bob.
A.her B.its
C.his
二、 句型转换。
1.My name is Lisa.(改为否定句)
My name is not/isn't Lisa.
2.Lucy and Lingling are my good friends.(改为一般疑问句,并作肯定回答)
—Are Lucy and Lingling your good friends?
—Yes, they are.
3.Paris is the capital of France.(对画线部分提问)
What's the capital of France?
4.The famous table tennis player Ma Long is from Liaonin