1.tony is very charming but i wouldn't trust him

⇒charming

2.mary doesn't intend to buy such an expensive car

⇒mary has

3.only the timely arrival of the police prevented the fight from escalating

⇒had

`1.` Charming as Tony is, I wouldn't trust him.

`->` Đảo ngữ : Adj + as/though + S + be, S V : Dù là

`2.` Mary has no intention of buying such an expensive car.

`->` Not intend to V : Không có ý định làm gì

`=` Have no intention of Ving 

`3.` Had it not been for the timely arrival of the police, the fight would have escalated.

`->` Đảo ngữ ĐK3 : Had it not been for N, S + would have PII : Nếu không phải vì

`1` .Charming as Tony is , i wouldn't trust him 

`=>` Adj / Adv `+` as `+` S `+` V `+` O `=` Although / Despite 

`=>` but `+` mệnh đề đối lập

`2` .Mary has no intention of buying such an expensive car

`=>` have no intention of `+` V-ing : không có ý định làm gì

`=>` intend to `+` V-inf : có ý định làm gì

`=>` such `+` a/an `+` Adj `+` N

`3` .Had it not been for the timely arrival of the police , the fight wouldn't been prevented from escalating 

`=>` cấu trúc đảo của điều kiện loại 3 : Had `+` S1 `+` not `+` P2 , S2 `+` would `+` have `+` P2