5)might (不能用 may) have done 表示“过去本可以做某事却未做。” 注意:其否定形式 might not have done 没有虚拟语气的用法,might not have done 只能表推测,相当于 may not have done,意为:“过去可能没有做某事。”
2.Whatever the policy of the United States, which as it happens was for regime change as a purpose of foreign policy, that was off the agenda as far as the United Kingdom was concerned.
Whatever无论什么
Whatever,no matter what的区别:
no matter what 只能引导状语从句,而不引导名词性从句。而 whatever 既可引导名词性从句(=anything that),也可引导状语从句(=no matter what):
1). 引导名词性从句(只用whatever):
无论他做什么都是对的。
正:Whatever he did was right.
误:No matter what he did was right.
无论他说什么似乎都有道理。
正:Whatever he says sounds reasonable.
误:No matter what he says sounds reasonable.
山羊找到什么就吃什么。
正:Goats eat whatever they find.
误:Goats eat no matter what they find.
2). 引导状语从句(两者可换用):
无论你说什么,我都不会相信你。
正:Whatever you say,I won’t believe you.
正:No matter what you say,I won’t believe you.