Usage note
已经用来表示动作或状态发生在过去，但对现在有影响。
yǐ jīng lái bǎo shí gōng zuò huò zhì dào kě yǐ xìn fú xiàn zài yǒu yǐng xiǎng.
已经 is used to indicate that an action or state happened in the past but has an impact on the present.
Context note
在描述过去的经历或状态时，我们经常使用已经。比如：我已经吃过晚饭了。
zài miáo shù guò qǔ de jīng lì huò zhì dào shí ， wǒ men jiāng xíng yòng yǐ jīng 。bǐ rú ： yǐ jīng kě chī guo wǎn fàn le 。
We often use 已经 when describing past experiences or states. For example: 我已经吃过晚饭了。I have already eaten dinner.
5 examples
我已经完成了作业。
wǒ yǐ jīng wán chéng le zuò yè。
I have already finished my homework.
他已经去了公园。
tā yǐ jīng qù le gōng yuán。
He has already gone to the park.
我们已经出发了。
wǒ men yǐ jīng chū fā le。
We have already started our journey.
她已经读过这本书了。
tā yǐ jīng dú guò zhè běn shū le。
She has already read this book.
他们已经结婚五年了。
tā men yǐ jīng jié hūn wǔ nián le。
They have been married for five years already.
5 mini stories
妈妈说我已经长大了，可以自己做饭了。爸爸说他已经学会了很多菜的做法。
mā ma shuō wǒ yǐ jīng zhǎng dà le， kě yǐ zì jǐ zuò fàn le。 bà ba shuō tā yǐ jīng xué huì le hěn duō cài de zuò fǎ。
Mom said I had grown up and could cook by myself. Dad said he had learned many ways to make dishes.
昨天我已经有时间去图书馆了。今天我已经借到了那本书。
zuó tiān wǒ yǐ jīng yǒu shí jiān qù tú shū guǎn le。 jīn tiān wǒ yǐ jīng jiè dào le nà běn shū。
Yesterday, I already had time to go to the library. Today, I have already borrowed that book.
他已经完成了任务，所以现在可以休息一下。我已经学了很多新单词，所以也准备好了考试。
tā yǐ jīng wán chéng le rèn wu， suǒ yǐ xiàn zài kě yǐ xiū xī yí xià。 wǒ yǐ jīng xué le hěn duō xīn dān cí， suǒ yǐ yě zhǔn bèi hǎo le kǎo shì。
He has already finished his task and can rest now. I have already learned many new words and am ready for the exam.
昨天我已经去了超市，买了一些水果和蔬菜。今天他已经把它们都清洗干净了。
zuó tiān wǒ yǐ jīng qù le chāo shì， mǎi le yì xiē shuǐ guǒ hé shū cài。 jīn tiān tā yǐ jīng bǎ tā men dōu qīng xǐ gān jìng le。
Yesterday, I had already gone to the supermarket and bought some fruits and vegetables. Today, he has already cleaned them all.
我已经去过那个城市两次了。他已经有三年没有见过他的朋友了。
wǒ yǐ jīng qù guò nà ge chéng shì liǎng cì le。 tā yǐ jīng yǒu sān nián méi yǒu jiàn guò tā de péng yǒu le。
I have already been to that city twice. He hasn't seen his friend for three years already.
Mini dialogue
已经做完
A
你的作业做完了吗？
Nǐ de zuòyè zuò wán le ma?
Have you finished your homework?
B
我已经做完了。
Wǒ yǐjīng zuò wán le.
I have already finished it.
已经吃过
A
你饿吗？要不要吃点心？
Nǐ è ma? Yào bù yào chī diǎnxin?
Are you hungry? Do you want a snack?
B
谢谢，我已经吃过午饭了。
Xièxie, wǒ yǐjīng chī guo wǔfàn le.
Thank you, I have already eaten lunch.
Related words and contrasts
opposite
还没
hái méi
not yet
Used to say something has not happened yet
contrast
刚刚
gāng gāng
just now; a moment ago
Refers to the very recent past, while 已经 can be further in the past