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thankyouforyourhelp同义句有:Thanksforhelping.Thankyouforhelping.it'skindofyoutohelpme...为什么有些用for,有些用to?为什么有些用原型,有些又ing?说起这个,我还想起了it'stimeto...it'stimefor这些都有

题目详情
thank you for your help同义句有:Thanks for helping.Thank you for helping.it's kind of you to help me...
为什么有些用for,有些用to?为什么有些用原型,有些又ing?
说起这个,我还想起了it's time to...it's time for这些都有什么不同?
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答案和解析
for是介词,后面要接doing或者是名词
to在这里是动词不定式的,后面要接动词原形
而help既可以做及物动词也可以作名词
Thank you for your help.或者Thank you for helping me.
同样,It is time to do sth或者是It is time for sb to do sth.或者是It is time for doing sth.