decide on/to do
determine on/to do
be determined to do
make up one's mind to
make a decision
They decided to break up.
We have reached a decision.
I made up my mind to study hard and win a scholarship this year.
What have you decided?
I've decided to study abroad.
I will back you up no matter what you decide.
I can't make a decision without knowing the facts.
A: The summer vacation is coming up. Do you have any plans?
B: I haven't decided yet, but my parents want to travel to Mexico this summer and they want me to go with them.
A: That's a good thing. You can take advantage of this holiday to relax for getting better results next year.
take advantage of...表示“利用”，take good advantage of..表示“好好利用”，take full advantage of表示“充分利用”
B: Yes, I think so too. How about you? Have you made any decisions yet?
A: Well, I have decided to travel to Europe this summer holiday.
A: I would like that very much. But my parents feel worried about me, so I have to go with my classmates.
B: Your parents are right, it's safer.
A: Yeah, anyway, I'm glad I can visit Europe this time.
B: I know this is your dream all along. I'm so happy for you.
all along表示“自始至终”，相当于all the time
A: Thank you, and I've planned my routes. I'll travel through all the countries I like, especially Britain, Germany, the Netherlands and France.
B: Good idea. Well, I've decided I'm going to travel to Europe with you. I think it'll be more interesting.
A: Okay. Welcome to join us. But you will have to talk to your parents first.
B: I know, I'll tell them tonight.
A: Alright. I wait for your good news.