谁能详细的举例及分析英语中虚拟语气的各种用法？

一般现在时态： He likes milk.
一般过去时态：He liked English last year.
一般将来时态： We will go there.
现在进行时：Jim is sleeping now.
过去进行时： My brother was watching when my mother came back.
现在完成时：They have finished their homework.
过去完成时：The bus had already left by the time I get to the station.

虚拟语气在初中阶段的用法是：

真实条件句：主句用将来时或祈使句或含有情态动词的句子； 从句 用 一般现在时态。
例如： Your teacher will get angry if you are late for class.
虚拟语气即虚拟条件句：主句结构：could/should/might/would+ 动词原形；
从句结构：1.主语+were 2. 主语+动词过去式
例如： I would give it away to poor people if I had a million dollars.
I would wear a scarf if I were you.