like: Hay không. → →
Bitte sagt uns bald Bescheid, ob Ihr mit uns feiert. ☊ 
Làm ơn hãy thông báo cho chúng tôi, liệu các bạn có tiệc tùng chung với chúng tôi hay không. ☊ (Lektion 75, Nr. 1075) I was asked if/whether I could drive. ☊ ask ☊
choose whether, wat, etc...: You'll have to choose whether to buy it or not. ☊ choose ☊
debate whether, what, etc...: The committee will debate whether to lower the age of club membership to 16. ☊ debate ☊
She couldn't decide whether he was telling the truth or not. ☊ decide ☊
Please say definitely whether you will be coming or not. ☊ definitely ☊
Your age shouldn't make any difference to whether you get the job or not. ☊ make a, no, some, etc. difference (to/in sb/sth) ☊
She stood there, hesitating over whether or not to tell him the truth. ☊ hesitate ☊
I wonder if I should wear a coat or not. ☊ if ☊
You've got to go to school, whether you like it or not. ☊ like ☊
Just say yes or no. ☊ no ☊
I don't know if he's telling the truth or not. ☊ not ☊
Every now and again she checked to see if he was still asleep. ☊ (every) now and again/then ☊
We're not sure whether we still want to proceed with the sale. ☊ proceed ☊
The question arises as to whether or not he knew of the situation. ☊ question ☊
Nor, to repeat, can these changes be avoided. ☊ repeat ☊
I asked him whether he had done it all himself or whether someone had helped him. ☊ whether ☊
You are entitled to a free gift whether you accept our offer of insurance or not. ☊ whether ☊
I'm going whether you like it or not. ☊ whether ☊