Question

She ______have stopped her work halfway.

A．ought to not	B．ought not to
C．not ought to	D．does not ought to

Answer 1

B

試題分析：句意：她不應(yīng)該半路停止工作。這里是ought to have done否定的形式，應(yīng)該是ought not to have done，故選B。
點評：本題難度適中。對于情態(tài)動詞的各種否定形式也是高考�？嫉膬�(nèi)容，需要考生牢記它們的用法，這里考生容易誤選A。
即學(xué)即練：—I didn’t tell my parents the secret yesterday.
—But you __________.
A. ought to do          B. ought to
C. should               D. ought to have
解析：D。句意：因為上半句是過去時，所以是對過去事實表示推測，應(yīng)該用“情態(tài)動詞+完成時”。而D項就是這種形式的省略。