Question

You were stupid to try climbing up there. You ______ yourself.

A．can kill	B．might have killed
C．might kill	D．must have killed

Answer 1

B

試題分析：考察情態(tài)動詞用法。本句中前句中的were說明本句敘述的是過去的事情，故使用“情態(tài)動詞+have done”表示對過去的虛擬或者推測。排除AC項。might have done也許做了某事；must have done一定做了某事；句意：你想爬到那里真是太愚蠢了。你也許會傷到自己的。故B正確。
點評：本題是高考必考考點，一定要牢記句型意思。must have done過去肯定做了某事。should have done 本應該做而實際未做。can’t have done 過去不可能做了某事；shouldn’t have done 本不應該做而實際做了。 need have done 本有必要做某事；needn’t have done 本沒有必要做某事；注意沒有 mustn’t have done的形式。