用介词in,例如:

1、These trees come into leaf in February.这些树二月里长叶子。

2、He was jailed in February 1992 and could be released next year.他于1992年2月入狱,可能明年获释。

3、In February 1935, Naomi journeyed to the United States for the first time.1935年2月,娜奥米第一次来到美国旅行。