英文构成否定句及疑问句的助动词

分类: 作业答案 • 2021-12-19 11:49:34

问题描述：

英文构成否定句及疑问句的助动词

答

有三种情况：
be 动词：am is are was were
情态动词：can could , may might , will would , shall should
助动词：do does did

答

be动词：am，is，are，was，were。
情态动词：can，could，may，might，will，would，shall，should。
助动词：do，does，did。,

答

有be动词are,am,is,和助动词do,does,did