名词性从属连词：that, whether, what, how, when …
形容词性（定语）连词：that, which, who, when, where …
副词性（状语）连词：before, after, although, because …
There are 2 ways to combine two sentences ： Punctuation and Conjunction.
eg. He is a good student; he studies hard every day. I like him. //semicolon connect two related sentence.
2.dash [–] and colon [:] (press [ALT]+[-_] to type it on Mac)
eg. He is a good student – he studies hard every day. I like him. //dash connect two related sentence too.
Fist of all : This is wrong :
Because he is a good student, so I like him very much.
Conjunction expressed a parallel or logic relationship.
Look at following 3 sentence:
He is a good student, so/and I like him very much.
I like him very much because he is a good student.(In front of because have no comma[,])
Because he is a good student, I like him very much.
He succeeded both because of his intelligence and because of his hard work.
Even though / Though / Although he is nice, (yet) I don’t like him.(yet in here is a adverb, although it’s right, but suggest don’t use it like this.)
and / or / but / not but: connect same things.
eg. He failed because he was lazy and because he was selfish. = He failed because he was lazy and selfish.
eg. Is she kind or stingy/mean?
eg. He is nice, but I don’t like him.
eg. He’s failed not because lazy but selfish.
as well as / rather than
eg. Peter as well as I is fun of music.
eg. Peter rather than I is fun of music. = Peter, not I, is fun of music.
eg. He is ugly rather than handsome. = He is ugly, not handsome.
not… but… / not only… but also… / either… or… / neither… nor…
eg. Not he but I am wrong.
eg. Not only he but also I am wrong.
eg. Either he or you are wrong.
eg. Neither you nor he is wrong.