EF234 adverb clause words

when- I was watching TV when the phone rang.

while- I was watching TV while you were making supper.

I talked to you while I was waiting for the bus.
She had a headache when she got home.
She had a headache while she was driving home.

before/ after
We had some cake after supper. PREPOSITIONAL PHRASE, NOT ADVERB CLAUSE
We had some cake after we had supper. S V

until- up to a time/ stop
I will wait until you call.
She will practice piano today until she learns the song.
I will love you until I find someone better.

than- compare two things
She is taller than I am.
He is more handsome than his brother (is).
Yesterday was hotter than today (is).

because/since
since has two meanings- time, reason
time
Margaret has lived in Vancouver since 1994.
Margaret has lived in Vancouver since she moved here in 1994.

reason
Since it's hot, let's go to the beach.
Because it's hot, let's go to the beach.
I bought a new router since it was on sale.

although/ though/ even though- same meanings
She is working hard although she finds it difficult.
She is working hard though she finds it difficult.
She is working hard even though she finds it difficult.