一般过去时的否定句？
Mary didn't swim across the lake last week.
Jane didn't write a letter tu his grandpa last month.
Our team didn't win the contest yesterday.
I didn't eat any fruits for dinner last night.
Mark didn't catch a fish yesterday.
Lisa didn't ride horsees last summer.
Ann didn't read the book in the library last Friday.
They didn't run in the park yesterday.
Tom didn't draw a picture on the paper.
一般过去时表示过去某个时间里发生的动作或状态、过去习惯性、经常性的动作、行为、过去主语所具备的能力和性格。
基本结构：主语+谓语(动词过去式)+句子其他成分；主语+was/were+形容词/名词/介词短语+过去时间；否定形式was/were+not；在行为动词前加didn't，同时还原行为动词；一般疑问句Did+主语+do+其他。
一般过去时，表示过去某个时间里发生的非持续性动作或存在的状态，也表示经常或反复发生的动作。用动词的过去式表示，常和表示过去的时间状语连用，如：yesterday，last night，in+过去的年份，two days ago，before，the age of等。
一般过去时也表示过去经常或反复发生的动作，常和often，always等表示频率的时间状语连用。表示过去习惯性、经常性的动作、行为;过去主语所具备的能力和性格。
