EF3/4 Adverb clauses

adverb clause- because if when

I got irritated because some of the boys were playing with their phones.
Because some of the boys were playing with their phones, I got irritated.

irritate (v) - irritated (adj) irritation (n)
My son is an irritation to my daughter.
The loud noise was irritating.

if
when

after / before
The young woman went out to a party after work.
SIMPLE
The young woman went out to a party after S V work. COMPLEX - adverb clause
The young woman went out to a party after she finished work. COMPLEX

Before I moved to Canada, I lived in Russia.

I lived in Algeria before I moved to Canada.

if -

Joan will go to the party if she's free.

You can learn a lot of useful English if you practice for a certain amount of time every day.

a certain amount of time - a set number of minutes/hours

If you practice for a certain amount of time every day, you can learn a lot of useful English.   

since - 2 meanings -time, because
time
Matt has lived in Vancouver since 1999. SIMPLE
Matt has lived in Vancouver since he left Calgary. COMPLEX - adv cl
since = because CHOICE
Let's go to the beach since/because it is such a nice day.

HW