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问题 到底是 in my leisure time还是at my leisure time

词典上只说了： at (my) leisure= in my free/spare time.但是到底是 in my leisure time 还是 at my leisure time?谢谢！

问题 Spring is the season to fly kites in.(句末介词是否要)

这里能加in吗？我知道不要in，这个句子是对的，不定式和名词的动状关系？

问题 国际贸易增长2.4%（用介词in还是for）

2.4% growth in global trade这个句子里的介词用 for 可以吗？

问题 at the party 和 in class

 请问老师为什么说in class不说at class呢？http://ask.yygrammar.com/app_q-26458.html我看了之前的精彩回答，这里的class好像也是一种活动吧

问题 季节名词前用什么冠词

张道真语法书中有这样的例句：The story was set in a September in the 1980s.此句用了a September?那么季节可以类推吗？The story was set in a summer in the 1980s 和The story was set in summer in the 1980s 哪个对？summer前需要加 a 吗？

问题 in a meeting与at a meeting的区别

关于 at a meeting 的用法见得比较多，但很少见到有 in a meeting 的用法，比如下面一句： She is in a meeting now, but I will let you know as soon as she is free. 请问 in a meeting 与 at a meeting 的区别是什么？谢谢！

问题 be soon in 是固定用法吗（新概念三第11课句子）

All the things I had packed so carefully were soon in a dreadful messbe soon in 是个常见的固定用法吗?这个短语表示不一会变成的意思？为什么不是 be soon into?

问题 in competition with 的用法疑问

We’re in competition ______ several other companies for the contract. A. of    B. with     C. for       D. to答案是 B。为什么其他几个不可以选呢？

问题 句中的present in是什么词性？怎么理解它？

The differences between King and Malcolm X represented a core tension present in black political thought throughout the 1960s and 1970s.

问题 interested in joining the club是形容词短语吗

Anyone interested in joining the club should contact us at the address below.有意加入俱乐部者请按下面的地址和我们联系。老师，interested in joining the club 如果分词，说不通；是形容词短语作anyone的后置定语吗？一般遇到什么问题才会用逻辑方法...

问题 还是in/after+时间段，时间段+later

He thought they would leave in 3 days/after 3 days/3 days later.该用哪个时间状语？敬请专家老师给予指导。

问题 among、in、inside、within和into之间的区别

请问 among、in、inside、within和into之间的区别。百度了很多内容，都说到不太清楚。

问题 请分析in what was to become（老托语法）

In North America, the Nebraska culture that succeeded the Woodland culture about A.D 1300 pioneered in _______ to become the area's chief economic activity, agriculture.(A) it was(B) which was(C) what was(D) was为什么选C，谁能帮忙分析一下？多谢！

问题 rise in the east 还是 rise from the east

I am afraid the moutain would break down. The next morning we got up early in order to see the sun rise ______ the east.rise in the east 还是 rise from the east?

问题 so that, in order that引导目的状语从句的区别

请问老师so that和in order that在引导目的状语从句时用法和意思有没有区别，能不能互相替代呢？We’re also going to have our loan program so that people are able to afford school.如这一句，so that 能否用in order that 替换？