所谓错综时间条件句即条件从句与主句所指时间不一致，如从句指过去，而主句指的是现在或将来，此时应根据具体的语境对时态作相应的调整。

　　If it had rained last night, the ground would be wet now.

　　要是昨晚下过雨的话，现在地面就会是湿的。

　　You would be much better now if you had taken my advice.

　　假如你(当时)采纳我的建议，你现在就会好多了。

　　⊙强化印证1

　　单句语法填空(不多于3个单词)

　　1．Alaska was sold to the United States; otherwise Russian ____________ (speak) there now.

　　答案：would be spoken　考查虚拟语气。句意：阿拉斯加卖给了美国，否则现在那里就说俄语了。otherwise用于虚拟，指与现在事实相反的假设。

　　2．If I ____________ (listen) to your advice yesterday, I ____________ (not be) in trouble now.

　　答案：had listened；wouldn't be　考查错综时间条件句。条件句与过去事实相反；主句与现在事实相反。

　　3．其他从句的虚拟语气

　　在表示"建议、命令、要求"以及"重要性"和"紧迫性"等含义的主语从句、宾语从句、表语从句和同位语从句中，谓语动词常用虚拟语气，由"动词原形"或"should＋动词原形"构成。现分述如下：

　　(1)主语从句

　　①It be＋形容词＋that...(should)．..

　　用于该句型的形容词是：necessary, good, important, right, wrong, better, natural, proper, funny, strange, surprising等。一些名词也可以用于该结构中，如a pity, no wonder等。

　　It's necessary that we (should) have a walk now.

　　我们有必要现在出去散散步。

　　It's natural that she (should) do so.

　　她这样做是很自然的。

　　It's important that we (should) take good care of the patients.

我们要照顾好病人是重要的。