A wildlife expert predicts that the reintroduction of the caribou into northern Minnesota would fail if the density of the timber wolf population in that region is more numerous than one wolf for every 39 square miles.
(A) would fail if the density of the timber wolf population in that region is more numerous
(B) would fail provided the density of the timber wolf population in that region is more
(C) should fail if the timber wolf density in that region was greater
(D) will fail if the density of the timber wolf population in that region is greater
(E) will fail if the timber wolf density in that region were more numerous
OA 对B的解释是:if is preferred to provided; density should be modifi ed by greater
今天看到一个MM总结的OG笔记里面这样写的:- "if" is more general than "provided"
- "provided" is usually used in a positive statement.
即provided引导条件从句不用于否定条件,其含义倾向于only if
还是不太懂,有没有谁能够把if和provided的用法讲详细一点?? |