虚拟语气的词有哪些

虚拟语气在从句中用should的情况:
1。在表示建议,要求,命令,想法的动词后的从句里,用should + 动词原形,should 可以省略。如 advise,agree,command,decide,demand,determine,grant,indicate,insist,order,prefer,propose,request,require,stipulate,suggest,urge,vote。常考到的是:suggest,advise,demand,require,propose,insist,order,request。
His doctor suggested that he (should) take short leave of absence。
2。在表示建议,要求,命令,想法的名词后的从句里,用should + 动词原形,should可以省略。如 advice,decision,agreement,command,decree,demand,determination,indication,insistence,order,preference,proposal,request,requirement,stipulation etc。
It was Bill’s suggestion that everyone (should) have a map。
3。在It is/was +形容词后的that 从句中用should的结构,should 可以省略。这类形容词常见的有:advisable,anxious,compulsory,crucial,desirable,eager,essential,fitting,imperative(绝对必要),impossible,improper,important,natural,necessary,obligatory,possible,preferable,probable,recommended,urgent,vital etc。
It‘s natural that she (should) do so