allow to do and allow doing 区别 有50追分能看明白,有个例子说到位!答

allow to do and allow doing 区别 有50追分能看明白,有个例子说到位!答

首先我要说一下,你的问题本身有些问题,因为英语中并没有allow to do sth这种结构,只有allow doing sth 及allow sb to do sth这两个结构.你这样记忆可能方便一些：1.在主动语态中,如果allow后面没有sb出现在allow后面的话,就要接动名词形式；如果后面有sb做宾语,则必须要接to do sth.2.在被动语态中,只有sb be allowed to do sth的句式结构,而没有sb be allowed doing sth.allow既可作及物动词又可作不及物动词(多用于及物动词),1）allow sb.to do sb.允许某人去做某事,The doctor allowed him to smoke.医生允许他吸烟.2）allow sb doing sth.允许某人做某事,可以表示当前可允许做的事或习惯性动作.根据上下文有时sb可以省略.如：Is not allow (anyone)smoking in this meeting room.这间会议室里是不允许吸烟的.类似的词还有:advise,forbid,permit,encourage等,如:3) We advised him to have a good rest.我们劝他好好休息.4) He advised going to Beijing for the holiday.他建议到北京去度假.======以下答案可供参考======供参考答案1:allow sb. to do sth. ====sb. be allowed to do sth.allow doing sth.供参考答案2:to do sth侧重于具体的一次性的动作doing sth……则侧重于习惯性的动作你可以体会一下下面句子的含义：The hospital does not allow smoking, but he is allowed to smoke in the smoking room by the doctor.仔细品味二者的不同含意，便可知其在用法上的区别了。

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