1
be dead
表示状态，意为'死的，不工作的'。
The battery in my phone is dead.
我手机里的电池没电了。
死的
deadest — superlative of dead
先理解核心含义，再看它在真实句子里的用法。
死的
no longer having or seeming to have or expecting to have life
The battery in my phone is dead.
我手机里的电池没电了。
也指无生气、麻木、熄灭等
不再活着的；已故的。(也可作名词。)
No longer living; deceased. (Also used as a noun.)
没有生物的；贫瘠的。
Devoid of living things; barren.
筋疲力尽的。
Utterly exhausted.
因遭人憎恶或冒犯而彻底被回避、忽视或排斥的。
So hated or offensive as to be absolutely shunned, ignored, or ostracized.
The gardener removed the dead leaves from the plant.
园丁从植物上摘掉了枯死的叶子。
We found a dead fish floating in the pond.
我们发现池塘里漂浮着一条死鱼。
After the storm, a dead tree fell across the road.
暴风雨过后，一棵枯死的树倒在路上。
表示状态，意为'死的，不工作的'。
The battery in my phone is dead.
我手机里的电池没电了。
指对某事物没有反应或感觉。
He was completely dead to the world after the long journey.
长途旅行后，他对周围的一切毫无知觉。
固定比喻，强调完全失去活力。
The party was dead as a doornail by midnight.
到午夜时，派对像门钉一样死气沉沉。
Not this
He dead yesterday.
Use this
He died yesterday.
dead是形容词，不能用作谓语动词。表示‘死亡’这个动作应用动词die，且yesterday表示过去，故用过去式died。
Not this
I am afraid of dead.
Use this
I am afraid of death.
dead作为形容词意为‘死的’，作名词时指‘死者’（常用复数the dead）。表示抽象的‘死亡’概念应用名词death。
Focus on the distinctions below. Other candidates are kept compact until a reliable usage note is available.
死胡同
We reached a dead end.
我们走进了死胡同。
筋疲力尽
I'm dead tired after work.
下班后我筋疲力尽。
死一般的寂静
There was dead silence in the room.
房间里一片死寂。
没电的电池
My car has a dead battery.
我的车电池没电了。
毫无用处的人或物
This old computer is a dead loss.
这台旧电脑毫无用处。
死胡同
This negotiation is a dead end.
这场谈判陷入了死胡同。
筋疲力尽
After working 12 hours, I'm dead on my feet.
工作了12小时后，我筋疲力尽。
一模一样的人/物
He is a dead ringer for the actor.
他和那个演员长得一模一样。
我还没死呢！
In Monty Python and the Holy Grail, the line 'I'm not dead yet!' is a classic.
在《巨蟒与圣杯》中，台词'我还没死呢！'是经典片段。
死人不会告密
In Pirates of the Caribbean, Barbossa says 'Dead men tell no tales'.
在《加勒比海盗》中，巴博萨说'死人不会告密'。
Use deadest naturally, then get feedback on meaning, tone, grammar, and phrasing.
Revisit a common error or keep this word in your review list.
联想‘倒地’，人倒地不起如同死亡或极度疲惫，记住dead就是‘死的’或‘累极的’。
本义'死亡的'为中性语域，适用于各种非正式与正式语境。
Words head, bread, and thread rhyme with dead (all pronounced /-ɛd/). Said also rhymes but is spelled with 'aid' instead of 'ead'. Bead and lead (verb) are spelled with 'ead' but are pronounced /-iːd/, so they do not rhyme with dead.
Dictionary facts from ECDICT, WIKTIONARY.