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promise后面的宾语从句有虚拟吗,有位知有说

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promise后面的宾语从句有虚拟吗,有位知有说
“还有些动词,如 hope,expect,promise 等,其宾语从句有时候也要虚拟.如“他本答应昨天就来帮我,结果却没来”,前面部分就要用虚拟语气表示:He promised that he (should) come and help me.” 有这种说法吗?
看了你的问题和追问,应该是在虚拟语气的其他用法中有疑问,
只有在一想要( desire ) 一宁愿( prefer ) 一坚持( insist )二命令( order ,command ) 三建议( advise ,suggest ,propose/recommend ) 四要求( demand ,require ,request ,ask )中,无论主句谓语动词为何种时态,从句的谓语动词都用:"should + do".should可以省略.
eg:He suggested that we (should) take the teacher's advice.
  He insisted that we (should) take the teacher's advice.
  He demand that we (should) take the teacher's advice.
  He ordered that we (should) take the teacher's advice.