need做行为动词时后接 ______或________
问题描述：
need做行为动词时后接 ______或________
I need to wash hands first.(否定句)_______________________________________.
（用作情态动词的否定句）________________________________________.
答
I don't need to wash hands first.I needn't wash hands firstneed做行为动词时后接 ______或________need作为情态动词就用needn‘t ，行为动词就用don’tneed