Learn 句子 + 吧 / 了 / 吗 / 呢 and 有时间 + 吗？ through Making Plans to Meet an Old Friend.
Examples
我想问你一个问题。
I want to ask you a question.
他问我叫什么名字。
He asked me what my name is.
Examples
请记住这个单词。
Please remember this word.
老师让学生记住公式。
The teacher had the students memorize the formula.
Examples
明天我们见面。
We will meet tomorrow.
句子 + 吧 / 了 / 吗 / 呢Modal particles sit at the END of a sentence: 吗 turns a statement into a yes/no question, 呢 asks "and what about…", 吧 softens a suggestion, and 了 signals a change of situation.
你这些天忙吗？
Have you been busy lately?
那我们星期天见面吧。
Then let's meet up on Sunday.
S + 有时间 + 吗？ / …的时候 + VUse this pattern to ask whether someone is free and to arrange something for when they are. 有时间 means 'to have time, to be free', and …的时候 means 'when …'.
你有时间的时候告诉我。
Tell me when you have time.
你星期天有时间吗？
Are you free on Sunday?
Xiao Lin texts Xiao Nan to arrange a meet-up.
你好！很多天不见。你这些天忙吗？
Hi! Long time no see. Have you been busy lately?
我这些天很忙，很少休息。
I’ve been very busy these days and hardly rest.
是啊。我也很忙。你什么时候有时间？
Right. I've been busy too. When are you free?
这个星期天我有时间。你星期天有时间吗？
I'm free this Sunday. Are you free on Sunday?
有时间。我有事想告诉你。
I’m free. There’s something I want to tell you.
好啊！你有时间的时候打电话告诉我。
Sure! Call me when you have time.
那我们星期天见面吧。
Then let's meet up on Sunday.
好，我记住了。星期天见！
OK, I've got it. See you Sunday!
我还想问你一些事。
There are a few things I still want to ask you.
你问吧，星期天我们见面再说。
Go ahead and ask — we'll talk more when we meet on Sunday.