"pay attention to"中“to"是介词还是不定式标志?
"pay attention to"中“to"是介词还是不定式标志?
pay attention to中的to是介词还是动词?
怎样区分to是介词还是动词不定式标志呢?
如何区分短语中的to是不定式标志还是介词?
pay attention to doing sth.中的to是介词,英语中还有哪些短语的to是介词?
ability to pay 中的to 是作不定式,还是作介词?
entrance to the park中to 是介词还是不定式~
是pay attention to do sth .还是pay attention to doing sth.
pay close attention sb还是pay close attention to sb
pay attention to do sth 还是pay attention doing sth
如何区分to在短语中是介词还是不定式
怎样区分to是动词不定式的标志,还是介词呢?