问题
选择题
Don't come ___ you are invited.
A.unless
B.if not
C.why
D.that
答案
答案:A
unless可相当于if not,但用于句中时,不可说:if not you are invited ,可以说if you aren't invited,所以选unless。
Don't come ___ you are invited.
A.unless
B.if not
C.why
D.that
答案:A
unless可相当于if not,但用于句中时,不可说:if not you are invited ,可以说if you aren't invited,所以选unless。