Connectors: although, however, because, so, when, while

Connectors are words that link ideas in a sentence or between sentences. They help you show contrast, reason, result, or time.
In this lesson, you will learn how to use:

although, however, because, so, when, while

1. What Do Connectors Do?

Connectors join two ideas and show the relationship between them.
Examples:

• “I was tired. However, I worked.”
• “I stayed home because it rained.”

2. Using “because” (Reason)

We use because to explain why something happens.
Structure:

Result + because + reason

Examples:

• “I stayed home because I was tired.”
• “She was late because she missed the bus.”
• “They are happy because it is the weekend.”

Meaning: We use because to give the reason for something.

Do not use because and so together in the same sentence: Because I was tired, so I went to bed. → “Because I was tired, I went to bed.” / “I was tired, so I went to bed.”

3. Using “so” (Result)

We use so to show a result.
Structure:

Reason + so + result

Examples:

• “I was tired, so I went to bed.”
• “She missed the bus, so she was late.”
• “It was raining, so we stayed home.”

Meaning: The second part is the result of the first.

4. Using “although” (Contrast)

We use although to show contrast (two different or surprising ideas).
Structure:

1. Although + contrast clause, main clause
2. Main clause + although + contrast clause

Examples:

• “Although I was tired, I worked.”
• “She went out although it was raining.”
• “Although he is rich, he is not happy.”

Meaning: The two ideas are different or surprising.

5. Using “however” (Contrast Between Sentences)

We use however to show contrast. It often starts a new sentence (or comes after a semicolon), so it usually links two separate clauses. It is more formal than but.
Structure:

1. Sentence. However, sentence.
2. Sentence; however, sentence.

It usually has a comma after however.

Do not write: I was tired, however I worked.
Write: “I was tired. However, I worked.” OR “I was tired; however, I worked.”

Examples:

• “I was tired. However, I worked.”
• “She studied a lot. However, she failed the test.”
• “It was expensive. However, I bought it.”

Meaning: We use however to connect ideas across sentences.

6. Using “when” (Time)

We use when to talk about something that happens at a specific time.
Structure:

• When + action, result
• Result + when + action

Examples:

• “When I get home, I relax.”
• “She called me when she arrived.”
• “When it rains, we stay inside.”

Meaning: We use when to show the time of an action.

7. Using “while” (Time / Two Meanings)

We use while for (1) two actions happening at the same time, and (2) something that is true during a period of time.

We also use it for a longer background period:

• “While I was in London, I worked in a café.”

Structure:

While + action, another action

Common pattern: While + past continuous, past simple / While + past continuous, past continuous.

Examples:

• “While I was cooking, he set the table.”
• “I cut my finger while I was cooking.”
• “While I was cooking, he set the table.”

Meaning: Here, while = “during”. We are not using while for contrast in this lesson.

8. Word Order with Connectors

Checklist:

1. If because/although/when/while start the sentence, we often use a comma after the first clause (especially if it is long): “Because I was tired, I went home.”
2. If they are in the middle, we usually don’t use a comma: “I went home because I was tired.”
3. However usually starts a new sentence (and needs a comma after it): “However, …”

Short note: Short ‘when/while’ clauses may be written without a comma in some styles.

9. Easy Way to Remember

• because → reason
• so → result
• although → contrast (one sentence)
• however → contrast (two sentences)
• when → time (at a time / an event)
• while → time (during a period; often two actions at the same time)

Use connectors to link ideas and show reason, result, contrast, and time in a clear way.