Remember :
✅ Write clear sentences, not long sentences.
If your sentence becomes difficult to read, divide it into two shorter
sentences.

Quick Reminder
Because
Shows a reason.

Example:
I stayed home because I was feeling sick.

Although
Shows contrast.

Example:
Although the exam was difficult, I remained calm.
❌ Never use although + but together.
⸻
However
Shows contrast between two complete sentences.
Example:
The hotel was expensive. However, the service was excellent.

Therefore

Shows a result.
Example:
She studied hard. Therefore, she passed the exam.
⸻
Since
Can also mean because.
Example:
Since many people work remotely, online meetings have become common.