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must和mustn’t的用法
情态动词+have done的意义有哪些?
答:
在高考试题中此语法点也备受青睐。先看最新几道相关的高考题目: 【经典考例1】 The weather turned out to be fine yesterday. I ___ the trouble to carry my umbrella with me. (2006江西) A. should have taken B. could have taken C. needn't have taken D.
mustn't
have taken ...
英语求救!谢谢
答:
as to 的功能类似于 with regard to,regarding,on the matter of,concerning 等,常用于相当正式的语境中,尤其用于争论和做出决定时。可放于句首或与 wh- 疑问词引导的动词不定式和名词性从句连用 As to the journey,we
must
decide about that later.至于旅行,我们必须以后再作决定。Nobody co...
have to的否定形式是什么?
答:
must 有非推测性用法和推测性用法两种情态意义,变否定句的方法不同。▲非推测性
用法的must
表示义务,情态意义为“必须”。He must finish his homework before bedtime. 他必须在上床前写完作业。此用法的must两种否定形式:1. 结构上否定:在must改为must not或
mustn't
,情态意义为“不许”。He ...
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