The “To Be” Verbs In Simplified Chinese: When To Use 是 shì, 在 zài, And Adjectives

Chinese “to be” patterns look simple, right up until they absolutely do not. The big three you need are 是 shì, 在 zài, and adjective sentences with no “to be” verb at all: 形容词作谓语 xíngróngcí zuò wèiyǔ, “adjectives used as predicates.”

Get these three patterns straight, and your Chinese instantly sounds less like a dictionary with anxiety and more like an actual person speaking Mandarin.

English uses “to be” everywhere: “She is a teacher,” “He is at home,” “The food is good.” Simplified Chinese splits those jobs up. You use 是 shì for identity and classification, 在 zài for location, and adjectives by themselves for description.

That last part is the one that trips people up. In Chinese, “The coffee is hot” is not 咖啡是热 kāfēi shì rè. It is 咖啡很热 kāfēi hěn rè. Yes, the 很 hěn is doing more work than it first appears to be doing.

Yak Reality Check

If you translate English word by word, Chinese will politely let you make a mess. “Is” in English does not always become 是 shì in Chinese. Sometimes it becomes 在 zài. Sometimes it becomes nothing at all. Delightful.

是 shì

Use: identity, category, noun = noun

他是老师。Tā shì lǎoshī. He is a teacher.

在 zài

Use: location, where someone or something is

他在学校。Tā zài xuéxiào. He is at school.

Adjectives

Use: description, quality, condition

他很忙。Tā hěn máng. He is busy.

Use 是 shì For Identity And Classification

是 shì links one noun or pronoun to another noun. Think of it as the pattern for saying what someone or something is in terms of job, nationality, relationship, or category.

Basic pattern:
Subject + 是 shì + noun

Pattern	Meaning	Example	Translation
我是学生。 Wǒ shì xuéshēng.	I am a student.	我是学生。 Wǒ shì xuéshēng.	I am a student.
她是我朋友。 Tā shì wǒ péngyou.	She is my friend.	她是我朋友。 Tā shì wǒ péngyou.	She is my friend.
这是咖啡。 Zhè shì kāfēi.	This is coffee.	这是咖啡。 Zhè shì kāfēi.	This is coffee.
他们是中国人。 Tāmen shì Zhōngguó rén.	They are Chinese.	他们是中国人。 Tāmen shì Zhōngguó rén.	They are Chinese.

Rule: use 是 shì when the word after it is a noun or noun phrase, not an adjective.

她是老师。Tā shì lǎoshī. She is a teacher.
北京是中国的首都。Běijīng shì Zhōngguó de shǒudū. Beijing is the capital of China.
那是我的手机。Nà shì wǒ de shǒujī. That is my phone.

When Not To Use 是 shì

Do not use 是 shì just because English uses “is.” That is the trap.

他是高。Tā shì gāo. ❌ Wrong.
他很高。Tā hěn gāo. ✅ He is tall.
书是桌子上。Shū shì zhuōzi shàng. ❌ Wrong.
书在桌子上。Shū zài zhuōzi shàng. ✅ The book is on the table.

Use 在 zài For Location

在 zài tells you where someone or something is. It works like “be at,” “be in,” or “be on” in English, depending on context.

Basic pattern:
Subject + 在 zài + place

Pattern	Meaning	Example	Translation
我在家。 Wǒ zài jiā.	I am at home.	我在家。 Wǒ zài jiā.	I am at home.
他在办公室。 Tā zài bàngōngshì.	He is in the office.	他在办公室。 Tā zài bàngōngshì.	He is in the office.
猫在椅子下面。 Māo zài yǐzi xiàmiàn.	The cat is under the chair.	猫在椅子下面。 Māo zài yǐzi xiàmiàn.	The cat is under the chair.
手机在包里。 Shǒujī zài bāo lǐ.	The phone is in the bag.	手机在包里。 Shǒujī zài bāo lǐ.	The phone is in the bag.

书在桌子上。Shū zài zhuōzi shàng. The book is on the table.
老师在教室里。Lǎoshī zài jiàoshì lǐ. The teacher is in the classroom.
我朋友现在在北京。Wǒ péngyou xiànzài zài Běijīng. My friend is in Beijing now.

Useful note: 在 zài can also be a verb meaning “to be located” or part of an action phrase, but for beginners, the most useful job is location.

Use Adjectives Directly For Description

This is the most important pattern in the whole article. In Chinese, adjectives can act like verbs. So instead of saying “The weather is cold” with 是 shì, you usually just say the adjective.

Basic pattern:
Subject + 很 hěn + adjective

很 hěn literally means “very,” but in simple adjective sentences it often softens the sentence and makes it sound natural. It does not always need to be translated as “very.”

Pattern	Meaning	Example	Translation
他很忙。 Tā hěn máng.	He is busy.	他很忙。 Tā hěn máng.	He is busy.
今天很冷。 Jīntiān hěn lěng.	Today is cold.	今天很冷。 Jīntiān hěn lěng.	Today is cold.
这个菜很好吃。 Zhège cài hěn hǎochī.	This dish is delicious.	这个菜很好吃。 Zhège cài hěn hǎochī.	This dish is delicious.
房间很大。 Fángjiān hěn dà.	The room is big.	房间很大。 Fángjiān hěn dà.	The room is big.

Why 很 hěn Shows Up So Often

Without 很 hěn, a plain adjective sentence can sound contrastive, like “He is tall, unlike someone else.” That is why beginners are usually taught to use 很 hěn first.

他高。Tā gāo. He is tall / He is tall in contrast.
他很高。Tā hěn gāo. He is tall.

咖啡很热。Kāfēi hěn rè. The coffee is hot.
她很漂亮。Tā hěn piàoliang. She is pretty.
这本书很有意思。Zhè běn shū hěn yǒuyìsi. This book is interesting.

Shi Vs. Zai Vs. Adjectives At A Glance

Use	Chinese Pattern	Example	Translation
Identity / category	是 shì + noun	我是老师。 Wǒ shì lǎoshī.	I am a teacher.
Location	在 zài + place	我在学校。 Wǒ zài xuéxiào.	I am at school.
Description	很 hěn + adjective	我很累。 Wǒ hěn lèi.	I am tired.
Object identification	是 shì + noun	这是水。 Zhè shì shuǐ.	This is water.
Object location	在 zài + place	水在冰箱里。 Shuǐ zài bīngxiāng lǐ.	The water is in the fridge.
Object quality	很 hěn + adjective	水很冷。 Shuǐ hěn lěng.	The water is cold.

Rule To Example Patterns You Can Actually Reuse

Talking About Jobs

我爸爸是医生。Wǒ bàba shì yīshēng. My dad is a doctor.
她是大学生。Tā shì dàxuéshēng. She is a university student.

Talking About Where People Are

我妈妈在厨房。Wǒ māma zài chúfáng. My mom is in the kitchen.
孩子们在公园。Háizimen zài gōngyuán. The children are in the park.

Talking About Feelings And Conditions

我很开心。Wǒ hěn kāixīn. I am happy.
他很累。Tā hěn lèi. He is tired.
今天很热。Jīntiān hěn rè. Today is hot.

Talking About Things

这个人是我老师。Zhège rén shì wǒ lǎoshī. This person is my teacher.
老师在教室。Lǎoshī zài jiàoshì. The teacher is in the classroom.
教室很大。Jiàoshì hěn dà. The classroom is big.

Practice Section

Pick the correct pattern: 是 shì, 在 zài, or an adjective sentence.

She is my sister. → 她是我姐姐。Tā shì wǒ jiějie.
The dog is in the car. → 狗在车里。Gǒu zài chē lǐ.
This book is expensive. → 这本书很贵。Zhè běn shū hěn guì.
We are at home. → 我们在家。Wǒmen zài jiā.
He is a student. → 他是学生。Tā shì xuéshēng.
The soup is hot. → 汤很热。Tāng hěn rè.

Swap The Wrong Part

她是学校。Tā shì xuéxiào. ❌
她在学校。Tā zài xuéxiào. ✅ She is at school.
苹果是在红。Píngguǒ shì zài hóng. ❌
苹果很红。Píngguǒ hěn hóng. ✅ The apple is red.
我很老师。Wǒ hěn lǎoshī. ❌
我是老师。Wǒ shì lǎoshī. ✅ I am a teacher.

Mini Drill

Try saying these aloud:

我在公司。Wǒ zài gōngsī. I am at the office.
我很忙。Wǒ hěn máng. I am busy.
我是经理。Wǒ shì jīnglǐ. I am a manager.

Same subject, three different jobs. Chinese is being annoyingly logical again.

Common Mistakes And Fast Fixes

Mistake	Why It Is Wrong	Fix
他是高。 Tā shì gāo.	高 gāo is an adjective, not a noun.	他很高。 Tā hěn gāo. He is tall.
书是桌子上。 Shū shì zhuōzi shàng.	Location needs 在 zài.	书在桌子上。 Shū zài zhuōzi shàng. The book is on the table.
她很老师。 Tā hěn lǎoshī.	老师 lǎoshī is a noun, so use 是 shì.	她是老师。 Tā shì lǎoshī. She is a teacher.
今天是冷。 Jīntiān shì lěng.	冷 lěng is an adjective.	今天很冷。 Jīntiān hěn lěng. Today is cold.
我是在家。 Wǒ shì zài jiā.	You usually do not stack 是 shì and 在 zài like that in a simple sentence.	我在家。 Wǒ zài jiā. I am at home.

A Tiny But Useful Nuance

You can sometimes see 是 shì before adjectives in special emphasis patterns, but that is not beginner-default Chinese. For everyday speech, stick with the clean version: noun with 是 shì, place with 在 zài, description with an adjective.

Quick Reference Summary

Use 是 shì for identity or classification.
他是老师。Tā shì lǎoshī. He is a teacher.
Use 在 zài for location.
他在学校。Tā zài xuéxiào. He is at school.
Use adjectives for description, usually with 很 hěn.
他很忙。Tā hěn máng. He is busy.
Do not use 是 shì before a normal adjective.
她很漂亮。Tā hěn piàoliang. She is pretty.
Do not use 是 shì for location.
猫在沙发上。Māo zài shāfā shàng. The cat is on the sofa.

Final Yak Box

One English verb, three Chinese patterns. That is the whole game. Ask yourself one question: am I naming what something is, saying where it is, or describing how it is? Then pick 是 shì, 在 zài, or an adjective sentence. Suddenly, the chaos is much smaller.

FAQ

Can I say 他是很高。Tā shì hěn gāo.?

No, not in normal beginner Chinese. Say 他很高。Tā hěn gāo. He is tall.

Why is 很 hěn often not translated as “very”?

Because in many simple adjective sentences, 很 hěn makes the sentence sound natural rather than strongly “very.” 我很累。Wǒ hěn lèi. usually means “I am tired,” not necessarily “I am very tired.”

Can I omit 很 hěn sometimes?

Yes, but beginners should keep it in most adjective sentences first. Without it, the sentence can sound contrastive or emphatic.