`1.` Should he need my address, I’ll leave a note on the desk.

`-` Should `+` S `+` V, S `+` V.

`-` need (v.): cần.

`-` address (n.): địa chỉ.

`2.` Were it not for the money from our sponsors, we would not be able to prepare the show.

`-` Were it not for `+` N, S `+` would `+` V.

`-` sponsor (n.): nhà tài trợ.

`-` prepare (v.): chuẩn bị.

`3.` Happen to come across the missing files, let me know at once, please.

`-` Happen to `+` V, S `+` V.

`-` happen (v.): xảy ra, tình cờ.

`-` come across (phr. v.): tình cờ gặp.

`4.` Should you come across my old wooden box somewhere in the cellar, don’t throw it away.

`-` Should `+` S `+` V, S `+` V.

`-` come across (phr. v.): tình cờ gặp.

`-` wooden (adj.): làm bằng gỗ.

`5.` Hadn't Pat let me copy her homework, I would have been reprimanded.

`-` Hadn't `+` S `+` V3/V-ed, S `+` would `+` have `+` V3/V-ed.

`-` let (v.): cho phép.

`-` reprimanded (v.): bị khiển trách.

`6.` Should there be a fire, please do not use the lift.

`-` Should `+` S `+` V, S `+` V.

`-` fire (n.): lửa, hỏa hoạn.

`-` lift (n.): thang máy.