It was on that evening when the baby was born.born后面为什么不需要介词

she was born on the evening of March 2nd中介词的用法与不同 He was born in the evening of September 2ed.这里介词为什么用in? 同义句转换The baby looked very strange when it was born bill was born on the evening of may 2nd The baby was born on a cold morning in 2002. T yang man was born on the evening of April third.为什么April前加 The baby was born _____ (dead) The baby was born _______ the evening _______ April 3rd. （ ）did the panda weigh when it was born? when was she born when was he born It's the day on which Jesus Christ was born.