David and Liu Ying friend相 当于it(它),Be动词用is,如:
This is a cat . Who is that?
主语是these(这些)或those(那些)时,相 当于they(他们、她们、它们), Be动词用are,如:
BE动词的缩写，
It’s They’re She’s He’s We’re I’m
She is We are I am They are He is It is
改错：
1.I are very good. am 2.They is strong. are 3.He are old. is 4.She am slim. is 5.It are lovely. is
The bird and the cat are in the tree.
2.主语是指一个人, 如男名David时,它相当于he(他)； 如女名LiuYing时,它相当于she(她), Be动词用is,如:
David is a boy.
What row Liu Ying in? 主语指两个或两个以上的人, 如David and Liu Ying时,这相当于they(他 们),Be动词用are,如:
11）The jeans __i_s___ on the desk. 12）Here __is____ a scarf for you. 13）Here __a_r_e__ some sweaters for you. 14）The black gloves __a_re___ for Su Yang. 15）This pair of gloves __i_s___ for Yang Ling. 16）The two cups of milk _a_r_e__ for me. 17）Some tea __is____ in the glass. 18）Gao Shan's shirt ___is____ over there. 19）My sister's name __is____Nancy. 20）__A_r_e__ David and Helen from England? 21）There __is____ a girl in the room. 22）There __a_r_e__ some apples on the tree. 23）__I_s____ there any apple juice in the bottle? 24）There __is_____ some bread on the plate. 25）You, he and I __a_r_e__ from China. 26）There __is_____ a boy, two girls and ten women
