`1.` To the best of my knowledge , Mr.Green is a lecturer.

`-` as far as + S + know `=` To the best of one's knowledge ( theo như hiểu biết của ai )

`2.` Should there be a fire , you musn't use the lift.

`-` In the unlikely event of sth : trong trường hợp xảy ra

`-` Đảo ngữ CDK loại `1` : Should + S + V-inf + ... , S + must + V-inf

`3.` No sooner had he arrived than things went wrong.

`-` Đảo ngữ : No sooner + had + S + Vpp + ... + than + S + V-ed/c2

`-` Hành động nào xảy ra trước thì dùng had + Vpp.

`4.` Mary is believed to have got the scholarship.

`-` Bị động với ĐT thông báo : S + tobe + ĐT thông báo + to + have + Vpp

`5.` I am not in the habit of driving to the left of the road.

`-` It is not a habit of sb to V-inf `=` S + tobe + not + in the habit of + V-ing