一、We'd是We had 的縮寫, had better 加動詞原形，表示“建議”，最好做某事。

例句：We'd better go home now.= We had better go home now.我們最好現在回家。

二、We'd是We would的縮寫，would like 加動詞不定式，意為“想要做某事”。例句：We'd like to have a picnic.=We would like to have a picnic.我們想要去野餐。

三、we'd具體是誰的縮寫，要依靠語境判斷，聯(lián)系上下文去判斷。