Hướng dẫn trả lời:
1. If you turn off all the lights, you won't pay more money.
(Áp dụng cấu trúc: V + O + and + S+ will/can + V + O.
⇒ If + you + V + O, S + will/ can + V + O.)
2. If she doesn't wear warm clothes, she will have a cold.
(Áp dụng cấu trúc: Unless +S1 + Vs,es + O, S2 + will/can/may + V + O.
⇒ If+ S1 + don't/ doesn't + Vinf+ O, S2 + will/can/may + V + O.)
3. If you aren't careful, you will have an accident.
(Áp dụng cấu trúc: V + O + or/otherwise + S + will/can + V + O.
If + you + don't + V + O, S+ will/ can + V + O.)
4. If you don't phone your parents, you have a trouble.
(Áp dụng cấu trúc: V + O + or/otherwise + S + will/can + V + O.
If + you + don't + V + O, S+ will/ can + V + O.)
5. If she doesn't whisper, everyone know what she is saying.
(Áp dụng cấu trúc: Unless +S1 + Vs,es + O, S2 + will/can/may + V + O.
⇒ If+ S1 + don't/ doesn't + Vinf+ O, S2 + will/can/may + V + O.)