28.It is a problem that doesn't need ________ right now.A.to solve
问题描述：
28.It is a problem that doesn't need ________ right now.A.to solve
28.It is a problem that doesn't need ________ right now.
A.to solve B.solving C.being solved D.to be solving
为什么选B 不选A?
need什么时候做情态动词
什么时候做实意动词？
答
B因为前面句子的意思是 这是一个现在不需要 的问题 从句的主语是 物,need做实意动词后加dong 做实意动词就接doing
情态动词接to do 吗？？不是，做实意动词有 人做主语+to do sth 物做主语+dong 但不可在后边加sth