to 可以作副词,后面不能接宾语。如果接宾语,只能是介词,或者是用于“动词+to”短语中。
to 作副词:She didn't come to for several hours. 她昏迷了好几小时。(外研社、建宏《英汉多功能词典》to)
to 作介词:The truth suddenly came to me. 我突然了解到真相。(外研社、建宏《英汉多功能词典》come)Would you come to me [my house] this Sunday.这个星期天你来我[我家]这儿好吗?(同上)