If Tom ____(study)harder before,he____(pass)the examination last _英语解答

If Tom ____(study)harder before,he____(pass)the examination last week.

人气：346 ℃　时间：2019-09-29 14:50:52

解答

had studied;would have passed
考察虚拟语气,与过去事实相反,从句谓语用had+过去分词；主句谓语用would/should/could/might + have + 过去分词