(1)(a/an) useful book填哪个,为什么?(2)take an active part
(1)(a/an) useful book填哪个,为什么?(2)take an active part
take an active part in 为什么加a
为什么take part in没有a,但是take an active part in要加an?
take an active part in为什么有an?
为什么useful前有时用a(a useful book),有时用an(an useful animal)啊
( )useful book a/an
active前面加a还是an,take an active part take part in与join.jOinin有
take an active part in (doing)
take an active part in=?
用take an active part in造句~
We should take an active part in
take _an__active (为什么填an?active的发音好像不是a的发音?)