postmark sth
及物动词，后面直接接被盖戳的信件、包裹等。
The clerk postmarked the letters before they went out.
职员在信件寄出前给它们盖了邮戳。
盖邮戳
postmarks — third person singular of postmark
盖邮戳于。；盖邮戳以注明邮寄日期和时间；盖邮戳于
to stamp mail with a postmark showing the place and date of mailing
盖邮戳于。
To apply a postmark on.
盖邮戳以注明邮寄日期和时间
stamp with a postmark to indicate date and time of mailing
一般现在时
The clerk postmarks every letter before sending.
职员在寄出每封信前都盖上邮戳。
一般过去时
She postmarked the package yesterday afternoon.
她昨天下午给包裹盖了邮戳。
现在完成时
They have already postmarked all the envelopes.
他们已经给所有信封盖了邮戳。
规则动词，过去式和过去分词加-ed。
The clerk postmarked the letter immediately after I handed it over.
我递过信后，职员立刻盖上了邮戳。
用法提示：动词postmark在这里表示在信件上盖邮戳，使用过去式postmarked。
Please ensure all parcels are postmarked before the deadline.
请确保所有包裹在截止日期前盖上邮戳。
用法提示：动词postmark使用被动语态are postmarked，表示被盖上邮戳。
She forgot to postmark the envelope, so the recipient couldn't tell when it was sent.
她忘记给信封盖邮戳了，所以收件人无法知道寄出时间。
用法提示：动词postmark用不定式形式to postmark，表示忘记做盖邮戳这个动作。
及物动词，后面直接接被盖戳的信件、包裹等。
The clerk postmarked the letters before they went out.
职员在信件寄出前给它们盖了邮戳。
常用被动语态，后接地名或日期，说明寄出的地点或时间。
The envelope was postmarked Boston on May 2.
这个信封上盖着5月2日波士顿的邮戳。
get + 宾语 + 过去分词，表示请人给某物盖邮戳。
She got the first-day cover postmarked at the main post office.
她让主邮局给这枚首日封盖了邮戳。
grammar · medium
易错句子The clerk postmarked on the envelope.
正确表达The clerk postmarked the envelope.
postmark 是及物动词，后面直接跟被盖戳的物品作宾语，不能像汉语“在信封上盖邮戳”那样加介词 on 再接宾语。
grammar · medium
易错句子The letter postmarked yesterday.
正确表达The letter was postmarked yesterday.
信件是“被盖邮戳”的，须用被动语态 be + 过去分词；汉语这类句子没有对应的 be 动词，学习者容易漏掉 was，把过去分词直接当谓语。
grammar · medium
易错句子All the letters were postmarking this morning.
正确表达All the letters were postmarked this morning.
被动语态中要用过去分词 postmarked 表示动作承受者；postmarking 是现在分词，表示主动进行，与主语 letters 的逻辑关系不符。
泛指盖任何印章或戳记，对象不限；postmark 专指邮政盖的、注明寄出日期的邮戳，多用于邮件。
指盖戳表示邮资免除或已付（如官方邮件），重点在资费；postmark 只记录寄出日期时间，并不表示免资。
指盖戳使邮票作废，重点在注销邮票；postmark 强调在邮件上留下日期时间的邮政戳记，两者常在同一次盖戳中完成，但含义不同。
Choose the next layer that will help you use postmarks with more confidence.
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