look forward to hearing from you中to后面不是应该用动词原形吗?

look forward to hearing from you中to后面不是应该用动词原形吗? i am looking forward to hearing from you!这里的TO后面应该是用动词原形hear look forward to 后面可以加动词原形吗? look forward to 后面应该用动词原形还是加ing? I look forward to meeting you 不是说动词后加原形吗 怎么还用meeting 3q I look forward to hearing from you soon. 把 i look forward to hearing from you all We look forward to hearing from you soon 英语语法 这句I look forward to hearing from you soon.中不定式里为什么会用hea I look forward to hearing from you与I am looking forward to h 英语中的介词区分I look forward to hearing from you中的to 我怎么知道它是不是介词,又 I look forward to hearing from you in the near future to sch