一、當表達緣由時
to和for都可以使用,但to此時是不定式的用法,後接動詞原形,而for則直接後接名詞,如:
I went to the supermarket to buy apples.
I went to the supermarket for apples.
二、當表示“給予”時
此時的to和for後面都可以接動作的物件,但用to時往往意味著句子的謂語動作會發生方位變化(事物從一個地方移到另一個地方),for則沒有,如:
I made a cake for her.
I gave a cake to her.
三、當表達目的時
此時與第一條類似,to用作不定式後接動詞原形,而for則直接後接名詞,如:
I asked her to give me the key.
I asked her for the key.
擴充套件資料:
一、只能用to的情況
1、表動機或原因(motive or reason,後接動詞原形)
例:I came here to talk to you.
2、表時刻(Telling the time)
例:Let"s meet at ten to nine.
3、表距離(Distance)
例:It"s only three kilometers from my house to yours.
二、只能用for的情況
1、表有益或有害的
Drinking water is good for you.
2、表一段時間
I lived in Spain for five years.
3、表計劃或安排
I"ve made an appointment for May 4th.
一、當表達緣由時
to和for都可以使用,但to此時是不定式的用法,後接動詞原形,而for則直接後接名詞,如:
I went to the supermarket to buy apples.
I went to the supermarket for apples.
二、當表示“給予”時
此時的to和for後面都可以接動作的物件,但用to時往往意味著句子的謂語動作會發生方位變化(事物從一個地方移到另一個地方),for則沒有,如:
I made a cake for her.
I gave a cake to her.
三、當表達目的時
此時與第一條類似,to用作不定式後接動詞原形,而for則直接後接名詞,如:
I asked her to give me the key.
I asked her for the key.
擴充套件資料:
一、只能用to的情況
1、表動機或原因(motive or reason,後接動詞原形)
例:I came here to talk to you.
2、表時刻(Telling the time)
例:Let"s meet at ten to nine.
3、表距離(Distance)
例:It"s only three kilometers from my house to yours.
二、只能用for的情況
1、表有益或有害的
Drinking water is good for you.
2、表一段時間
I lived in Spain for five years.
3、表計劃或安排
I"ve made an appointment for May 4th.