Engels (uitwerking zinnen)

Hoi
Ik vroeg me af of iemand deze zinnen door zou kunnen kijken voor spelling of grammatica fouten
alvast bedankt!

- Past tense
I came here to seek for new opportunities.
She is careful, whereas he takes risks.
On behalf of all my friends can I congratulate you on winning the game.

- Negatives
This isn’t a formal complain.
The new skate ramp hasn’t been used very often.

- Questions
You sing with an almost defiant northern accent, why?
Is it me or is the weather getting worse?
But what if the newly affluent in Asia do aspire to just as many car trips?