Tim has tried twice,and his father asks him to have____ third try.A.the B.a

问题描述:

Tim has tried twice,and his father asks him to have____ third try.A.the B.a

一般来说,序数词frist second third.前面应用定冠词.但是这里例外:在表示“追加”等类似意思的序数词前面要用不定冠词a
所以选B