2015年衛(wèi)生類職稱英語考試備戰(zhàn)已經開始了，這是小編整理的一些常見的語法，希望對您能有所幫助。開心生活，快樂學習。每天進步一點，積累下來便是巨大的進步。

    I should have known better.

    結構︰主詞+should have known better（than to+原形動詞）

    說明︰此句型意為“本來不應該那樣笨（而…）”，是指已經做過之事，而 know better（不致那樣笨）是指未做之事。

    I should have known better.我本來不應該那樣笨。

    I know better than to go swimming after dinner.我不致笨得吃過飯就去游泳。

    You should have known better than to talk like that.你本應更懂事而不致說這樣的話。

    You should have known better than to go mountain climbing alone.

    你本來不該笨得單獨去爬山。