改为复数：①.this is an apple.②.is that your eraser ？③.that.is.my.pencil.④.is.that.his.book?⑤.it.is.a.blue.jacket.⑥is.it.an.orange.ruler?
改为单数：①these are my clocks.②those are his notebook.③are these your rings.④are thos backpacks?⑤thoy are my books ⑥are thoy bous?
these are apples
those are your eraser
those are my pencils
those are his books
改为复数：①.this is an apple. These are apples .
②.is that your eraser ？Are those your erasers ?
③.that.is.my.pencil. Those are my pencils .
④.is.that.his.book? Are those his books ?
⑤.it.is.a.blue.jacket . They are blue jackets.
.⑥is.it.an.orange.ruler? Are they orange rulers ?
改为单数：①these are my clocks. This is my clock.
②those are his notebooks That is his notebook.
③are these your rings. Is this your ring ?
④are those backpacks? Is that a backpack?
⑤those are my books That is my book.
⑥are they boys? Is he a boy?
①.These are apples
.②.Are those your erasers ？
③.Those are .my.pencils
④.Are these.books?
⑤.They are.blue.jackets.
⑥Are they .orange.rulers?
改为单数：①This is my clock.②That is his notebook.③Is this your ring?.④Is that a backpack?⑤It is my book ⑥Is he a boy?
1.These are some apples.
2.Are those your eresers?
3.Those are my pencils.
4.Are those his books?
5.These are blue juckets.
6.Are these some orange rulers?
1.This is my colck.
2.That is his notebook.
3.Is this your ring.
4.Is that backpacks?
5.打错了吧，你再看看。
6.还是打错了，看看。
TESE ARE SOME APPLES. ARE THOSE YOUR ERASERS? THESE ARE MY PENCIL