问题
选择题
--- I started off to walk, but Peter gave me a lift.
--- Therefore, you _____ after all.
A．didn’t need walk
B．needed not walk
C．didn’t need to walk
D．need not to walk
答案
答案：C
考查need用法。在本句中need是实意动词需要的意思。其否定形式要借助于助动词，后面接带to的不定式。结合语境可知下文是描述的过去的动作，故助动词用过去时态。选C。