求教need的用法

liul781

need可谓实意动词和情态动词。

实意动词：need to do, need to be done, need doing

情态动词: need + v.

96.1    21.
The Alaskan Highway was officially opened November 20, 1942, although much
more work needed be done to complete it.

96.8   30.

Bacteria lived in the soil play a vital role in recycling the carbon and nitrogen
needed by plants.

中need的用法????????????


谢谢各位！！！！！！

liul781

答案： d ,a