英文grammar

1.Give that if we try to outperform our counterparts every time we do something,we would often have to end up with disappointment and frustration.

上面的句子有誤，應是
Given that we try to outperform our counterparts every time (when) we do something,we would often have to end up with disappointment and frustration
Given that =If =On condition that = Provided that ...

大家可否解釋係什麼句式/結構...假設語氣看這裡

2.Being invited by my friend Chris,I went to the Food and Wine Carnival.

第2句原本個句式:
Because I was invited by my friend Chris,I went to the Food and Wine Carnival.的分詞構句，看這裡


3.After having this experience,I affirmed myself greatly.

這句原本句構---同上視為分詞構句，
After I had this experience,I affirmed myself greatly.
或視After為介詞，介詞片語作為修飾主句的副詞亦可