英文以a.m.结尾的句子标点加不加？

a.m.、p.m.、etc.是缩写词,有关标点符号的用法如下： 出现在句尾时,如果句尾是句点（句号）,则句点（句号）可省略,但a.m.、p.m.、etc.本身后面的点需保留,如（1）.如果句尾是问号,则不可省略a.m.、p.m.、etc.后面的点以及问号. 出现在句中,或者后面接逗号、破折号、冒号时,a.m.、p.m.、etc.的点不可省略,如（1）Yorktown Daily is slowing updates as the storm moves through Virginia, effectively stopping regular updates at 10 p.m.（2） We will be back reporting at 7 a.m. tomorrow. （3） Voting sites across the county will be open from 7 a.m. to 7 p.m. Tuesday in the Republican and Democratic party primaries. （4）The access ramps from Telegraph Road southbound and northbound to the Inner Loop (I-95/495 South) will be closed during daytime hours for roadway construction from Monday, May 9 through Thursday, May 12 from 9:30 a.m. – 3:30 p.m., and on Friday, May 13 from 9:30 a.m. – noon.