定語從句的難點在於主從句之間的內部邏輯。
關於這一點，我在以前也有比較詳細的解釋：
實用英語語法 第二十五講 定語從句
定語從句還是同位語從句，記住一句話，就能輕鬆來區別
今天和大家一起來具體複習如果先行詞（即被定語從句修飾的詞）在從句中是主語或賓語，我們怎麼選擇that和which。
一， 先行詞是人，用that/who/whom引導從句；不能用which：
He that/who fears death lives not.
貪生怕死死的快。
A person that/who will swear, will lie.
開口就賭咒發誓的人往往在說謊。
I really admire people that/who speak two languages.
我真的很佩服會說兩種語言的人。
（先行詞在從句中做主語，用who/that）
There are always people (whom/who/that) you don’t get along with.
總有一些你沒法相處好的人。
二，先行詞是物，which和that都可以用：
She has a small office which is used for private discussions.
她有一間小辦公室，用來私人會談。
There is a kind of pleasure which/that comes from giving away.
付出帶來一種快樂。
Anger is a wind which/that blows out the lamp of the mind.
憤怒是吹滅心靈之燈的風。
（憤怒使人喪失理智。）
三，先行詞是代詞，用that/who不用which：
Is there anything else that you'd like?
還再要點其他的嗎?
God helps those who help themselves.
天道酬勤。
Money is something that most people will never stopping chasing.
大多數人永遠不會停止追逐金錢。
There is nothing that can stop him from going there.
沒有什麼能阻止他去那兒。
You can accomplish all that you desire if you put your heart and soul in it.
如果你全身心投入，你就能實現你所渴望的一切。
但是如果他that為先行詞，為了不重複用which:
That which does not kill us makes us stronger.
那些殺不死我們的東西最終只會使我們變得更加強大。
Never deter till tomorrow that which you can do today.
今日事須今日畢，切勿拖延到明天。
四，先行詞前有以下限定詞，更多用that：
much, little, none, all, few, every, any, no；the very, the only, the same；形容詞最高級或序數詞
The best book that I read this year was 'The Da Vinci Code.'
我今年讀的最好的書是《達文西密碼》
The first thing that he noticed of her was her dark, long hair.
他首先注意到她的是一頭又黑又長的頭髮。
They met the very afternoon that he spent in the library.
他們是在他在圖書館度過的那個下午認識的。
So many traffic accidents that led to serious injuries are caused by drunk driving.
很多導致嚴重傷害的交通事故都是由酒駕造成的。
Parental love is the only love that is truly selfless, unconditional and forgiving.
父母的愛是唯一真正無私、無條件和寬容的愛。
The only thing that is worse than being blind is having sight but no vision.
唯一比失明更糟糕的是有眼無珠。
關於這一點，不能說用which就是錯的！
五，可以用介詞加which，不能用介詞加that：
Your metabolic rate is the speed at which your body transforms food into energy.
新陳代謝的速度是你的身體將食物轉化為能量的速度。
Behavior is a mirror in which everyone shows his image.
行為是一面鏡子，每個人都把自己的形象顯現於其中。
Experience is a school from which one can never graduate.
經驗無止境。
Life is a flower of which love is the honey.
生命如花，而愛是它的蜜。
六，非限制性定語從句裡，用which不用that：
The wisdom of nations lies in their proverbs, which are brief and pithy.
民族之智慧蘊藏於其簡短而有力的諺語中。
Unprofitable eloquence is like the cypress, which is great and tall, but bears no fruit.
誇誇其談不濟事，柏樹參天不結果。
It's raining, which probably means that the football match will be cancelled.
下雨了，這可能意味著足球賽將被取消。
（which可以指代整個全句哦！）
八，如果先行詞在從句中做賓語，that/who/whom/which都可以省略：
There are two points (which/that) I wanted to make.
我想說兩點。
The cell is the unit (that/which) all living organisms are composed of.
細胞是構成所有生物的單位。
There are some things (that/which) you learn best in calm, and some in storm.
你會在風平浪靜時學會一些事情，在暴風驟雨中學會另外一些。
圖片選自網絡，版權為原作者所有！