Each sentence given below contains a mistake. Find the mistake and correct it.

1. Because I was tired, so I decided to go home.

2. As you know, that I work very hard.

As a conjunction while means ‘during the time that’, ‘for as long as’, ‘at the same time as’ and similar ideas.

Incorrect: The car either dashed against a goat or a donkey.
Correct: The car dashed against either a goat or a donkey. (either + noun + or + noun)

Before as an adverb

As an adverb before means ‘at any time before now”. In British
English, before is commonly used with a present perfect tense.

Since

As a conjunction since means ‘from the past time when’.

Where have you been since I last saw you?
It is one week since we arrived here.
I have never seen him since I left that city.

Conjunctions are words that join together sentences, and sometimes words. There are mainly two types of conjunctions – coordinating conjunctions and subordinating conjunctions.

Except and unless

The conjunction except does not mean the same as the conjunction unless.