结构: 肯定句 主语+ would+动原+其他 eg: I didn't know if he would come.
否定句 主语+ would not +动原+其他
eg: They were not going to go hiking unless they finished their homework.
疑问句 Would+主语+动词原型+其他 (would you like是词组 一个固定搭配 一般用表示礼貌的问)
eg: Would you like to have a dinner with me?
(would可改为was/were going to ,主语第一人称时would也可以用should)