助动词和实义动词能做谓语 am is are was were +doing这里的am is are was were 是助动词吗 doing是

分类: 作业答案 • 2022-01-09 18:01:09

问题描述：

助动词和实义动词能做谓语 am is are was were +doing这里的am is are was were 是助动词吗 doing是
实义动词吗 doing不是非谓语动词吗

答

am is are was were +doing这里的am is are was were 是助动词 doing是实义动词do的现在分词形式,和 am is are was were 一起构成谓语