A1 noun ニュートラル #4,623 よく出る

bacteria

/bækˈtɪəriə/

Bacteria are very small living things that exist almost everywhere. While some can cause diseases and make people sick, many types are helpful for our health and the environment.

例文

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1

You should wash your hands with soap to kill the bacteria.

You should wash your hands with soap to kill the bacteria.

2

The researchers identified several types of bacteria in the water supply.

The researchers identified several types of bacteria in the water supply.

3

Gross, I bet there are so many bacteria on that old sponge!

Gross, I bet there are so many bacteria on that old sponge!

語族

名詞
bacteria
副詞
bacterially
形容詞
bacterial
関連
bacterium
💡

覚え方のコツ

Think of the 'bac' in bacteria and a 'back'—if you have bacteria on your back, you need to wash it!

クイックテスト

The doctor said that the illness was caused by ____.

正解!

正解は: bacteria

例文

1

You should wash your hands with soap to kill the bacteria.

everyday

You should wash your hands with soap to kill the bacteria.

2

The researchers identified several types of bacteria in the water supply.

formal

The researchers identified several types of bacteria in the water supply.

3

Gross, I bet there are so many bacteria on that old sponge!

informal

Gross, I bet there are so many bacteria on that old sponge!

4

The study explores how bacteria develop resistance to common antibiotics.

academic

The study explores how bacteria develop resistance to common antibiotics.

5

Our new cleaning product is guaranteed to eliminate 99% of surface bacteria.

business

Our new cleaning product is guaranteed to eliminate 99% of surface bacteria.

語族

名詞
bacteria
副詞
bacterially
形容詞
bacterial
関連
bacterium

よく使う組み合わせ

harmful bacteria harmful bacteria
beneficial bacteria beneficial bacteria
kill bacteria kill bacteria
spread bacteria spread bacteria
bacterial infection bacterial infection

よく使うフレーズ

good bacteria

healthy microorganisms in the body

gut bacteria

microorganisms living in the stomach/intestines

bacterial growth

the increase of bacteria numbers

よく混同される語

bacteria vs virus

Bacteria are living cells that can live on their own, while viruses need a living host to survive.

bacteria vs bacterium

Bacterium is the singular form (one), while bacteria is the plural form (many).

📝

使い方のコツ

In everyday English, 'bacteria' is often used as a collective noun, but in scientific contexts, it is strictly the plural of 'bacterium'.

⚠️

よくある間違い

Many learners say 'a bacteria', but they should say 'a bacterium' or just 'bacteria' when talking about them in general.

💡

覚え方のコツ

Think of the 'bac' in bacteria and a 'back'—if you have bacteria on your back, you need to wash it!

📖

語源

From the Greek word 'bakterion', meaning 'small staff' or 'rod', because the first bacteria seen under a microscope were rod-shaped.

文法パターン

Plural noun (singular: bacterium) Usually takes a plural verb (e.g., 'Bacteria are...')
🌍

文化的な背景

In modern health culture, people often distinguish between 'bad' bacteria that cause illness and 'good' bacteria found in foods like yogurt.

クイックテスト

The doctor said that the illness was caused by ____.

正解!

正解は: bacteria

Healthの関連語

nose

A1

The nose is the part of the face located above the mouth that you use for breathing and smelling. It contains nostrils which allow air to enter the respiratory system.

neck

A1

The part of the body that connects the head to the rest of the body. It supports the weight of the head and allows it to turn and move.

chest

A1

The chest is the upper front part of the human body between the neck and the stomach. It contains important organs like the heart and the lungs.

knee

A1

The joint between the thigh and the lower leg in humans. It is a vital part of the body that allows the leg to bend and supports the body's weight while standing or moving.

heart

A1

The organ in your chest that pumps blood through your body. It is also used to represent the center of your emotions, especially love.

cough

A1

A cough is a sudden, noisy expulsion of air from the lungs that usually happens involuntarily. It is often a symptom of a cold, the flu, or an irritation in the throat.

stomachache

A1

A pain in a person's stomach or the area around it. It is a common symptom often caused by eating too much, poor digestion, or a mild illness.

dizzy

A1

Dizzy describes a feeling where you feel like you are spinning or losing your balance. It often happens when you are sick or if you turn around in circles very quickly.

nausea

A1

Nausea is the feeling of being sick in your stomach and wanting to vomit. It often happens when you are ill, traveling in a car, or after eating bad food.

vomit

A1

Vomit is the food and liquid that comes out of your stomach through your mouth when you are sick. It is the physical substance produced after throwing up.

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