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虚拟语气一、if引导的虚拟条件句(表示与事实相反的假设):现在:If+主语+过去式/were,主语+should/would/could/might+动词原形过去:If+主语+had+过去分词,主语+should/would/could/might+have+过去分词过去式/were将来:If+主语+should+动词原形,主语+should/would/could/might+动词原形wereto+动词原形另外:有些词,如:or/otherwise(否则);without(没有);butfor(要不是……)等,表示一个隐含的条件,所用的虚拟语气与if引导的虚拟条件句结构相同注意:if引导的虚拟条件句中,谓语部分含有were/had/should,可将引导词if省略,并将were/had/should提到句首。二、wish之后接的宾语从句(表示不可能实现的愿望):过去式/were(现在)Wish+(that)had+过去分词(过去)would/could/might+动词原形(将来)三、asif/asthough常与seem/look/appear等动词连用,表示“看起来似乎……好象……”;以及ifonly表示“要是……该多好啊”所用的虚拟语气结构与wish结构相同;四、虚拟语气在名词从句中的运用:1、表示“命令”、“建议”、“要求”、“坚持”等词后所带的名词从句用虚拟语气,结构都是:(should)+动词原形,其中should可以省略。记忆口诀:insist2、动词order+(that)+主语+(should)+动词原形advise/suggest/recommend(宾语从句)require一坚持:insist二命令:order/command三建议:advise/suggest/recommend四要求:demand/require/request/ask3、名词:advice/suggestion/order/request之后接表语从句或同位语从句,谓语部分也是用(should)+动词原形;4、在主语从句中:Itissuggested/required/ordered/…that+主语+(should)+动词原形;Itisimportant/strange/necessary/…that+主语+(should)+动词原形;过去式(现在/将来)五、wouldrather+sb.+had+过去分词(过去)六、Itis(high)timethat+主语+过去式
本文标题:虚拟语气句型
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