That is a book.
This is a book.
These are books.
Those are books ,too.
These are my erasers.
Those are your pencil sharpeners.
This is an orange.
These are oranges.
That is her pencil.
Those are her pencils.
Is this your pencil? Is that his pencil case?
Are these your keys? Yes, they are. Are those her pens? No, they aren’t.
No, it isn’t. Yes,it is.
A:Are these your ……?
B :Yes ,they are . A :Are those your ….?
be动词表示“是”，有三个：am ,is, are. 我（I）用(am), 你(you )用(are), is连着他(he)、她(she)、它(it), 单数跟is 后，复数全部都用are.
this that is/am
these those are
Is this your clock? 1.This is my clock. 2.That is your ring. Is that your ring? 3.These are her books. Are these her books? 4.Those are his oranges. Are those his oranges? 5.Those are my backpacks. Are those your backpacks? 改错：
1.Are this your book? 2.Those is my pen. 3.Is these his pencils? 4.Are those her ruler? Is this your book?/Are these your books? That is my pen./Those are my pens. Are these his pencils? Are those her rulers?
5.Are they your books?Yes,they’re.
Are they your books?Yes,they are.
1.一般直接加s， 如pen—pens,eraser—erasers,book—books. 2.以o.s.x.sh.ch.结尾的加es, 如watch---watches. 3.以辅音字母加y结尾的，变y为i再加es, 如family---families,dictionary--dictionaries. 4.以f或fe结尾的变f或fe为v再加es， 如knife(小刀)—knives. 5.部分以“o” 结尾加es 如potatoes (土豆） tomatoes（西红柿） 其他加s, 如photo--photos
baseball game notebook ring ruler
pencils baseballs games notebooks rings rulers
boxes potatoes tomatoes
family baby party families babies parties boy class knife life dictionary photo
boys classes knives lives dictionaries photos
1.This is a book.
This are books. Those are oranges.
2.That is an orange.
3. This is my pencil .
These are quilts.
Those are her quilts. Are these your watches? Are those his dictionaries? They are maps. Those are his rings.
4.That is her quilt.
5.Is this your watch?
6.Is that his dictionary?
7.It is my map.
8.That’s his ring.
人称代词： I 我 you 你 he 他 she 她 it它 we我们 you 你们 they他们 形容词性物主代词 ： my 我的 your 你的 its 它的 our 我们的 their 他们的
his 他的 her她的 your 你们的
This is his pencil. Is that your pencil case?
Are those your oranges?
4.这些不是他们的地图。 These are not their maps. Are those their dictionaries?