Gail has much to be happy about.
Gail has much about which to be happy. [over-formal]
The house hadn't been paid for, so they had to sell it.
Paid for the house had not been, so they had to sell it. [not good English]
Can I take 'over-formal' is equal to 'not-recommended'? Additionally, What's the difference between 'over-formal' and 'not good English'? It appears to me that both 'over-formal' and 'not good English' mean 'not-recommended', demanding that one had better not use those.
I wouldn't say it's 'over-formal'. I'd say 'very formal'.
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