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.”

Do not use because and so together in the same sentence. Choose one:

• ✗ “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.”

4. Using “although” (Contrast)

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

• Although + contrast clause, main clause
• 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.”

5. Using “however” (Contrast Between Sentences)

We use however to show contrast between two sentences. It often starts the second sentence.
Structure:

• Sentence. However, sentence.

Use a comma after however.

Do not write: ✗ “I was tired, however I worked.”
Write: ✓ “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.”

Although or however?

Use although to link two clauses in one sentence. Use however to connect two separate sentences:

• “Although it was raining, we went out.”
• “It was raining. However, we went out.”

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.”

Future time with when

After when for the future, use the present simple, not will:

• ✗ “When I will get home, I will call you.”
• ✓ “When I get home, I will call you.”

7. Using “while” (Time and Contrast)

While has two common meanings at A2:

Meaning	Use	Example
at the same time / during	actions or situations during the same period	“While I was cooking, he set the table.”
contrast	two different facts or preferences	“While Leo likes tea, Mia prefers coffee.”

For time, a common pattern is while + past continuous, past simple or while + past continuous, past continuous.

Time examples:

• “While I was cooking, he set the table.”
• “I cut my finger while I was cooking.”
• “While she was at university, she lived with her aunt.”

Future time with while

After while for the future, also use the present simple, not will:

• ✗ “While I will be away, my sister will feed the cat.”
• ✓ “While I am away, my sister will feed the cat.”

For contrast, while is similar to although, but it often presents two facts side by side:

• “While Leo enjoys cities, Mia prefers the countryside.”
• “I like working in the morning, while my brother works better at night.”

8. Word Order with Connectors

Checklist:

1. If because/although/when/while start the sentence, use a comma after the first clause: “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, …”

9. Common Mistakes

Avoid	Better	Why?
✗ “Because it rained, so we stayed home.”	✓ “Because it rained, we stayed home.”	Do not use because and so together for the same link.
✗ “It rained, however we went out.”	✓ “It rained. However, we went out.”	At this level, start a new sentence before however and put a comma after it.
✗ “Although I was tired, but I worked.”	✓ “Although I was tired, I worked.”	Do not use although and but together for the same contrast.

10. Easy Way to Remember

Connector	Function	Example
because	reason	“I stayed home because I was tired.”
so	result	“I was tired, so I went to bed.”
although	contrast in one sentence	“Although I was tired, I worked.”
however	contrast between two sentences	“I was tired. However, I worked.”
when	time: an event or point in time	“When I get home, I relax.”
while	time or contrast	“While I was cooking, he set the table.” / “While I like tea, I prefer coffee.”

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