agree是不及物动词 后面不能加doing作宾语
可以 agree to doing
至于agree to do sth字典上 是把 agree to 看做了助动词 = will do
但现在 人们一般认为 agree 可以是及物动词 后面可以跟不定式作宾语
但与 agree to doing 意思不一样
allow后面 绝对可以 跟 doing
如 smoking is not allowed here.这是被动语态
变成主动语态 就是 we don't allow smoking here.
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