$\text{1. Unless you keep silent, you will wake the baby up}$

$\text{-> If you don't keep silent, you will wake the baby up}$

 Unless S + am/is/ are hoặc V1/Vs/Ves hoặc don't/ doesn't V1 .....

 S + will/can/may + V1

= If loại 1 

$\text{2. Unless you stop talking, you wil not understand the lesson.}$

$\text{->If you stop talking, you will understand the lesson }$

Unless S + am/is/ are hoặc V1/Vs/Ves hoặc don't/ doesn't V1 .....

 S + will/can/may + V1

= If loại 1

$\text{3. He said that if he caught the plane, he would be home by five }$

Câu tường thuật: S said (that) ...(lùi về 1 thì)

$\text{4. She told her brother to stop smoking.}$

Câu tường thuật: S + told O + (not) to V

$\text{5.Mary apologized for not going to Jack's birthday party the next Sunday evening. }$

S + apologized (to sb) for (not) V-ing: xin lỗi về...

$\text{6. The manager congratulated the workers on doing excellent work that month }$

S + congratulated O + on V-ing

$\text{7. She told me that she always wanted to run her own bussiness }$

Câu tường thuật lời nói: S + told O + V2/ed.....