to¹

prep.

向，往，到
She lives in the house to the right.
她住在右邊的房子裡。
This road leads to Paris.
這條路通往巴黎。
（表示距離）離
（表示時間）直到，在……之前
He wrote from morning to night.
他從早到晚寫東西。
（表示程度，範圍）到，達
He was wet to the skin.
他渾身濕透了。
趨於；（變）成，（變）到
Things are going from bad to worse.
情形每況愈下。
（表示位置）對，面對
（表示接近，接觸）在，於，緊貼著
（表示對象）對，向
Excessive drinking did harm to his health.
過量飲酒損害了他的健康。
屬於，歸於
I've lost the key to the house.
我把屋子的鑰匙丟失了。
（表示比較，對比）比
This engine is superior to that one.
這臺發動機比那臺要好。
（表示比例關係）每
對於，關於
What is her attitude to the issue?
她對這個問題抱什麼態度？
與……一致，按……
Modern paintings are not to my taste.
現代畫不合我的口味。
為了，用作
We sat down to dinner at six.
我們六點鐘坐下來吃飯。
致使
To her delight, she passed the examination.
使她高興的是她考試及格了。
由於

ad.

to and fro

往復地；來回地
Trucks and cars were shuttling to and fro on the highways.
公路上卡車和汽車正來往奔馳穿梭。

反義:

prep.「到……；使得……」的反義字

to²

prep.

（與原形動詞一起）構成不定詞
The government offered to give us financial help.
政府提出在經濟上給我們援助。
To gossip about others isn't right.
說閒話是不對的。
代替不定詞（或不定詞短語，以免重複）
You can do it this way if you care to.
如果你樂意的話，可以這樣做。

以上來源於：《英漢大辭典》

prep.

expressing direction or position in relation to a location, point, or condition.
▸chiefly Brit. (in telling the time) before (the hour specified).
identifying the person or thing affected.
identifying a relationship between one person or thing and another.
▸indicating a rate of return:
ten miles to the gallon.
indicating that two things are attached.
governing a phrase expressing someone's reaction:
to her astonishment, he smiled.
used to introduce the second element in a comparison.
placed before a debit entry in accounting.

infinitive marker

used with the base form of a verb to indicate that the verb is in the infinitive.
▸ (about to) forming a future tense with reference to the immediate future.
used without a verb following when the missing verb is clearly understood:
she said she didn't want to.

adv.

so as to be closed or nearly closed.

OE tō (adv. and prep.), of W. Gmc origin.

以上來源於：《簡明牛津英語詞典》