话题 in that引导什么从句

话题 in和all的用法

话题 in 10 minutes' time

话题 join和join in

话题 in case引导表语从句

问题 last week可以作后置定语吗

名词短语可以做后置定语吗？Did you hear the fire at the school in the UK last week?last week 可以看做后置定语修饰 fire 吗？如果不可以，怎么分析？为什么语法书上没有名词短语作后置定语这一条？ 

问题 关于since的疑问

This has marked the fourth time since the first modern Olympics        (hold) in 1896 that the Games have been completely affected by outside forces.请问各位老师，横线处应该填什么形式呢？通过查询得知since既有连词词性也有介词词性，因此好...

问题 介词定义的问题(到底是表示与什么词的关系)

...，这个句中其他词到底是什么词，确定吗？例如: I swam in the river.这个 river 是介词其后的词，那介词 in 表示了其后词 river 与句中哪个词的关系，是句中的 I 还是句中的 swam 呢？请专家老师解释一下，谢谢。

问题 in a week还是after a week

—Where is your aunt?—She went to Beijing last month. She will be back _______ a week.A. after   B. in    C. behind   D. later我在 after 和 in 中犹豫。 

问题 My home in China这里为什么不加is?

 比如说：My home is in Sichuan. 这里就要加is。可为什么My home in China不加is呢？英语小白真诚求问。由衷感谢。

问题 have difficulty in doing(介词短语是做状语还是定语）

Young people have difficulty in contacting family."in contacting family"理解为做difficulty的定语好点儿，还是理解为做句子的状语好点儿?

问题 enroll in 和 enroll on有区别吗

enroll in 和 enroll on有区别吗 谢谢

问题 逗号用法（as it were为什么前后加逗号）

In more conventional forms of theatre, where each scenographic element is isolated and sub-contracted, as it were, to specialists, each contributor is easily identified.我有两个问题不明白，请问as it were为什么前后加逗号，这个句子成分分析是怎样的？谢谢老师

问题 next minute与the next minute(冠词有无)

高中英语必修2有这样一个句子：The flying carpet travelled so fast that next minute they were in Zimbabwe.查词典只查到the next minute，但没查到有next minute，这个句子的next minute为什么没有冠词？

问题 句子语法成分

Most of the time there have been what might be termed long worms as the market moved sideways, such that the CSI 300 index, has averaged the same level over the past five years. 请教老师，这里的as和such that是什么从句？as理解为伴随还是原因状语从句？