1. If Jack ______(be) late, we ______(go) without him. 2. If you ______(ask) more nicely, I ______(buy) you a snack. 3. I ______(come) to the party early if I ______(not have) anything else to do. 4. Sam ______(buy) a new TV if he ______(have) enough money. 5. Unless you ______(come) with me, I ______(not go) to Saras birthday party.

`1.` is `-` will go

`2.` asks `-` will buy

`3.` will come `-` don’t have

`4.` will buy `-` has

`5.` come `-` won’t go

`-------------------`

`-` Cấu trúc câu điều kiện loại `1:`

`->` If `+` S `+` am/is/are `+` N/Adj `+` ..., S `+` can/should/will `+` V-inf 

`->` If `+` S `+` V(s/es)`/`don't/doesn't + V-inf, S `+` will/can/should `+` V-inf 

`+` Mệnh đề If: S `+` V(present simple `-` HTĐ)

`+` Mệnh đề chính: S `+` will/can/should `+` V-inf

`->` Dùng để dự đoán một hành động, sự việc có thể xảy ra trong tương lai.

`@` Lưu ý: Unless `=` If ... not

`->` Unless `+` S `+` am/is/are + N/Adj`/`V(s/es), S `+` will/can `+` V

`=` If `+` S `+` am/is/are + not + N/Adj`/`doesn't/don't + V, S `+` will/can `+` V