我知道should是shall 的过去式,可是这两个单词的意思有很多不同啊,请举个例子should被用作shall 的过去时态的,

Shall we go to the movies?
You should go to the movies with him last night.

SHOULD 一般被用作过去本该做而未做的事

I told you I should be glad to do it. (=I told you, “I shall be glad to do it.”)我告诉过你, 我是高兴去做的.If I should fail I would try again. （shall 表示语气较强的假设: 万一, 竟然 )万一失败, 我还...