He has _____ useful book.(填an或a)
He has _____ useful book.(填an或a)
He has a useful book.有错吗
( )useful book a/an
an useful book还是a usefull book?
(1)(a/an) useful book填哪个,为什么?(2)take an active part
A dictionary is an useful book.找错
He gave my sister ____ useful book yesterday.A.an B.a C.X
He 【 】a book in his right hand.填be动词或have或has或with 是哪个?
He has a Chinese book .he has an English book改为选择疑问句
He is rich. He has many money. A dictionary is an useful boo
是an useful book还是a useful book 加a 或者an 主要看什么
为什么useful前有时用a(a useful book),有时用an(an useful animal)啊