To 可以用作介词,表示：
动作的朝向、抵达目的地以及动作的对象.
如：go to the park/ goto the door (朝向)
Climb up to the top of the hill(到达)
Speak/ talk to sb.; give sth.to sb.(动作对象)
达到某种程度.
sentence sb.to death; Thewater came up to my knees.(水没到我膝盖)
（时间）（从）……到……(时间)
from Monday to Friday; from 3 to 6 o’clock
二．用作动词不定式前的小品词：
如：It’s very king of you to say so.
It’s hard to do the job.
It’s important for me to learn English well. To 可以用作介词,表示：
动作的朝向、抵达目的地以及动作的对象.
如：go to the park/ goto the door (朝向)
Climb up to the top of the hill(到达)
Speak/ talk to sb.; give sth.to sb.(动作对象)
达到某种程度.
sentence sb.to death; Thewater came up to my knees.(水没到我膝盖)
（时间）（从）……到……(时间)
from Monday to Friday; from 3 to 6 o’clock
二．用作动词不定式前的小品词：
如：It’s very king of you to say so.
It’s hard to do the job.
It’s important for me to learn English well.