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

demand的用法和短语有哪些？

用法：demand用作及物动词，作“要求”解时，其主语通常为人，宾语可以是名词、代词、带to的动词不定式或that从句。短语：demand of 要求；向…索取；demand for 对…的需求。

作“需要”解时，其主语通常为事〔物〕，宾语一般是“时间”“耐心”等抽象名词；作“查问”解时，可接名词、wh-从句，也可引出直接引语。demand用作不及物动词时常与介词for连用，表示“要求”。

demand后用作宾语的that从句中谓语动词用虚拟语气，其中谓语动词用动词原形者，是美式英语用法，英式英语须加should。

示例：

Another flight would be arranged on Saturday if sufficient demand arose.

如果有足够的需求量，周六就会安排另一个航班。

读法英美

v.强烈要求；需要，需求

n.坚决的要求；需求，需求量；（困难的）要求

求:demand的用法....

demand 用法：

demand to do; demand that…, demand of **. to do sth.

Note: 后面的宾语从句要用虚拟语气。即：demand that **. (should) do的形式。

demand后接to do 还是doing?

demand to do; demand that…, demand of **. to do sth. note: 后面的宾语从句要用虚拟语气。即：demand that **. (should) do的形式。 a href="" target="_blank";/a这个论坛上会有更详细的回答。