三.later that day可以说成 after that day
不可.两者意思不同.
Later that day 那天的晚些时间（表示同一天的晚些时间）
After that day 那天之后（表示第二天或以后）
Our maths teacher came to school at 8 and left ___________.是 an hour later 还是 after an hour?请有针对性地解释一下.
语法上填任何一个都对.
Left an hour later 留下一小时（表示一个小时,不多不少,有精确性）
Left after an hour 一个小时后离开.单词 after（之后）意味不确定,大约一个小时.
四.
I didn’t even/really 对
I even could 可以,但不常规
I reallly could 对
I could even/really 对
I still/really couldn't 对
I am not still 不常规
要改为 I am still not
I am not really 对
也有
I am really not
I really am not
的说法.
五.中国传统节日前要加 the 尤其是festival 那种.有具体年份的都要加 the 是吗?
一般要加 the ,比如
The lunar New Year
The Dragon Boat Festival
at the 2013 Spring Festival 还是 in the 2013 Spring Festival
两个都对,但意思不同.
at the 2013 Spring Festival （在）春节
in the 2013 Spring Festival （在）春节里,in 表示春节时人们做的事/礼仪/等等.
也有 during theSpring Festival
例：
To enter your child in the Spring Festival event you mustsubmit his/her name and before the Monday cutoff.
The winners of the kite design contests will be announced atthe Spring Festival conclusion
物理学不是我所长,抱歉.