情态动词表示推测的用法有哪些?

图片[1]-情态动词表示推测的用法有哪些?-小e英语课堂-英语翻译_ 英语语法基础知识大全_英语手抄报_英语作文

情态动词表示推测的用法
肯定:用 must →may→ might 否定:用 can→could (must, might, could 不表示时态;而表示推测程度由强→弱)
①对现在情况推测时
肯定:must, may ,might +be must, may, might +be doing⋯ 否定:can, could + not + be⋯ can, could +not +be doing⋯ 疑问:Can, Could + be⋯?
Can, Could +be doing⋯? ②对过去情况推测时
肯定:must, may, might +have been⋯ must, may, might + have done⋯ 否定:can, could +not +have been⋯ can, could +not +have done⋯ 疑问:Can, Could +have been⋯?
Can, Could +have done⋯?

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