I regret __________ the novel to Jim because he made it very dirty.A) to lend B) having lent　　C) to be lending D) lent为什么选B ,而不是A

I regret __________ the novel to Jim because he made it very dirty.A) to lend B) having lent　　C) to be lending D) lent为什么选B ,而不是A
I regret __________ the novel to Jim because he made it very dirty.
A) to lend
B) having lent　　
C) to be lending
D) lent
为什么选B ,而不是A

I regret __________ the novel to Jim because he made it very dirty.A) to lend B) having lent　　C) to be lending D) lent为什么选B ,而不是A
B
regret doing sth
而且是已经做了的事,所以要用完成时
顺带一提regret to是对...表示惋惜
regret doing才是后悔做某事

借小说这件事本身发生在后悔之前，是已经完成的事。所以应用过去完成时的状态。故选B

regret doing / having done 做了某事 而后悔， 后悔曾经做了...
regret to do 一般用于 regret to say, regret to tell you 结构， 表示很遗憾的说， 很遗憾的告诉你， to do动作 发生在regret 后面。

B）having lent
I regret __having__lent______ the novel to Jim because he made it very dirty
我后悔把把书借给Jim，因为他把书弄得很脏。
A）to lend 是未发生将发生的时态
B）having lent 过去完成时，因为书已经借出去了，导致现在书很脏了.