要大写的吗？中间要不要加点？a.m还是AM,Am，A.M?
a.m.＝行李ante meridiem [Latin]上午;午前
p.m.=post meridiem [Latin] 下清枝午；午答带敏后
a.m. = A.M.
I go to school at 9 a.m.
p.m. = P.M.
We have supper at 6 p.m.
^ ^
上午AM和下午pm的怎么写
要大写的吗？中间要不要加点？a.m还是AM,Am，A.M?
a.m.＝行李ante meridiem [Latin]上午;午前
p.m.=post meridiem [Latin] 下清枝午；午答带敏后
a.m. = A.M.
I go to school at 9 a.m.
p.m. = P.M.
We have supper at 6 p.m.
^ ^