关于to的用法什么时候是to do 什么时候是to v.ing,我就是分不清哪些时候to做介词.

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to1.介词 (direction) 到
to France/London/school/the station
去法国/伦敦/学校/车站
we went to a party last night
我们昨晚去参加了一个聚会
the road to Manchester
通往曼彻斯特的路
2.介词 from here to London (as far as) 从这儿到伦敦
count to ten
数到10 3.介词 (position) 向
to the north/south
朝北/南 to the left/right
向左/右 nailed/stuck to the wall
钉/粘在墙上
4.介词 it's five/ten/a quarter to five (in time expressions) 差5分/10分/一刻5点
5.介词 (for,of) 的
the key to the front door
前门的钥匙 a letter to his wife
给他妻子的一封信
she is secretary to the director
她是主管的秘书
6.介词 to give sth to sb (indirect object) 给某人某物
talk to sb
对某人说 I sold it to a friend
我把它卖给了一个朋友
you've done something to your hair
你打理了你的头发
it was clear to me that...
对我来说这显而易见…
7.介词 damage to sth (after noun) (involving) 对某物的损害
a danger to sb
对某人的危险
repairs to sth
对某物的修理
8.介词 be friendly/kind/loyal to sb (towards) 对某人友好/仁慈/忠实
9.介词 30 miles to the gallon (in relation to) 每加仑可行30英里
A is to B as C is to D
A与B的关系就像C与D的关系
three goals to two
3比2 10.介词 e to sb's aid (purpose,result) 来帮某人的忙
sentence sb to death
判某人死刑 11.介词 from...to...(indicating range,extent) 从…到…
everything from seeds to vegetables
从种子到蔬菜的每样东西 from May to September从5月到9月 12.介词 enter to the sound of drums (with) 随着鼓声进入13.与动词连用 (simple infinitive) 与原形动词一起构成动词不定式to go/eat走/吃 to want/to try to do sth想/试着做某事 14.与动词连用 (with vb omitted) 用来代替动词不定式或不定式短语,避免重复15.与动词连用 I don't want to 我不想you ought to你应该