At the moment: 用于某一刻
I don’t want to talk about it at the moment. 我现在不想聊这件事。
She is busy at the moment. 她这会儿很忙。
For “Last, Next, This, Every”, we don’t need a preposition word. 在“last, next, this, every” 前面不需要加介词
They went to the mountains last month. 他们上个月去爬山。
I will fly to LA next week. 我会下周飞往洛杉矶。
He jogs every morning. 他每天早上都跑步。
They will leave this Friday. 他们这周五离开。
Exercise：
1. They will go to Hawaii __ two weeks.
2. They will go to Hawaii __ next month.
3. In Canada, Thanksgiving holiday is ___ October.
4. Thanksgiving is ___ October 31st.
5. He went to see his professor ___ the afternoon.
6. She will fly to the New York city __ Tuesday morning.
7. I have an appointment __ 10:30.
8. We will go fishing __ the weekend.
9. Coca Cola was invented __ the 19thcentury.
10. He loves skiing __ winter.
11. He was born __ 2001.
12. We plan to visit my parents __ Christmas.
13. I am very busy __ this moment.
倩倩_开心妈妈
第一题可以用for吗
录程留学 回复 @倩倩_开心妈妈：
能把原文发到这里吗？
录程留学 回复 @倩倩_开心妈妈：
没错，你的解读是对的。For & In 在这里会有完全不同的意思。
倩倩_开心妈妈 回复 @倩倩_开心妈妈：
第一题They will go to Hawaii__two weeks. 如果我用for，是不是意思就变成：他们要去夏威夷待上两周？而in的意思是两周之后去。
Maryguo_ub
Very useful,thanks.
小鸡快跑_ci
希望多出题
录程留学
谢谢每一位参与答题的听众。现在我把答案公布一下： 1-in; 2-不填； 3-in; 4-on; 5-in; 6-on; 7-at; 8-on; 9-in; 10-in; 11-in; 12-at; 13-at
小鸡快跑_ci
1 in ,2 不加，3 in, 4 on, 5 in, 6 on, 7 at, 8 in ,9 in, 10 in the, 11 in ,12 on, 13 at
录程留学 回复 @小鸡快跑_ci：
正确答案已经公布，检查一下吧！相当不错，只有两三个小错