“在春节”的英语是during the Spring Festival，不用in或on。
during
英 ['djʊərɪŋ] 美 ['dʊrɪŋ]
prep. 在......期间
例句：He swims every day during the summer.
翻译：他夏天每天游泳。
短语：
1、during cycle 预置周期
2、edema during menstruation 经期水肿
3、distortion during quenching 淬火应变
表示时间的 at, in,on
（1）at：表示片刻的时间，at 8 o'clock，at midnight, at the beginning of, at the age of, at Christmas, at New Year 等。
（2）in：表示一段的时间，如in the morning, in the afternoon, in October,in the past等。
（3）on：总是跟日子有关，on Sunday, on Christmas morning,等。
英语介词at，（表示位置）在;在（某时间或时刻）;以，达; 向，朝。
1. 在...地点
They were already waiting at the gate when I got there.当我到达那里时，他们已等候在门口了。
2. 在...时刻
Jane will meet her boy friend at Christmas.简将在圣诞节和她男友见面。
3. 向，朝，对着
Don't shout at me.别对我叫喊。
4. 在...方面
He is an expert at troubleshooting.他是位排解争端的能手。
5. 因为，由于
I woke at the sound of the bell.随着铃响，我醒了。
伊兰0518
