[Grammar] Unlike her father who is a renowned classical pianist, her mother is a successful the

[yi-ing]

Are these sentences correct? I mean, can we connect two independent clauses using preposition?, as they are not classidied as conjunctions or coordinators.

Unlike her father who is a renowned classical pianist, her mother is a successful theater actress.

In spite of being alone, he is so lively and happy.

 

[yi-ing]

There is only one independent clause in each of those sentences.

Good point teacher. I hadn't notice it before posting.
How about the following punctuation?

In spite the fact that he is alone, he is so lively and happy.
Unlike he was a successful student, he failed to pass his exams.

 

[emsr2d2]

Unlike her father, who is a renowned classical pianist, her mother is a successful theater actress.

See above. The addition of the comma saves the reader from thinking she has more than one father and it is just the one who is a pianist who is being mentioned.

 

[GoesStation]

Good point teacher. I hadn't notice it before posting.
How about the following punctuation?

In spite of the fact that he is alone, he is so lively and happy.

It needs the preposition I added above. You can save six words to donate to charity like this: Despite being alone, he is so lively and happy.

I'm not crazy about using so that way, but it's done very commonly.