虛擬語氣在從句中用should的情況:
1.在表示建議,要求,命令,想法的動詞后的從句里,用should + 動詞原形,should 可以省略.如 advise,agree,command,decide,demand,determine,grant,indicate,insist,order,prefer,propose,request,require,stipulate,suggest,urge,vote.?？嫉降氖?suggest,advise,demand,require,propose,insist,order,request.
His doctor suggested that he (should) take short leave of absence.
2.在表示建議,要求,命令,想法的名詞后的從句里,用should + 動詞原形,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 +形容詞后的that 從句中用should的結(jié)構(gòu),should 可以省略.這類形容詞常見的有:advisable,anxious,compulsory,crucial,desirable,eager,essential,fitting,imperative(絕對必要),impossible,improper,important,natural,necessary,obligatory,possible,preferable,probable,recommended,urgent,vital etc.
It‘s natural that she (should) do so