need可做情态动词,但通常以否定形式出现Must I wash the dishes?否定回答：No,you need't.
问题描述：
need可做情态动词,但通常以否定形式出现Must I wash the dishes?否定回答：No,you need't.
只是must开头的时候才会吗?can should呢?
1.He does not need________(do) too much homework.
2.You need to eat more vegetbables.(改为否定句）
答
Must I wash the dishes?否定回答：No,you need't.对
Can I...Yes,you can.No,you can't
Should I．．．? Yes, you should． No, you shouldn＇t．
1.He does not need_to do_______(do) too much homework. 因为前面用助动词does了,所以这里need是实义动词,要用to do
2.You need to eat more vegetbables.(改为否定句）
You don＇t need to eat more vegetables．
因为need 后面没有用动词原形,而加了to do,所以这里是实义动词