解析 T 句子“He didn't do his homework”中的助动词“didn't”是“did not”的缩写形式,而“did”是“do”的过去式。在否定句中,过去时的构成需借助助动词“did”的否定形式(did not/didn’t)加动词原形“do”。该结构明确表明动作(未完成作业)发生在过去,符合一般过去时的语法规则,因此判断为正确。
动词"do"属于英语中的不规则动词,其过去式不遵循常规的加-ed的变形规则。通过基本时态变化规则可知:"do"的现在时形式为do/does,过去时为did,过去分词为done。例句佐证:I do my homework every day → I did my homework yesterday. 因此题干"the past tense form of the verb 'do' is 'did'"的表述完全...
过去式：is-was，are-were，am-was 过去分词：is are am-been 过去式（past tense）是英语语法的一种，表示过去某个时间里发生的动作或状态。一般过去式的动词通常用动词的过去式形式来表示，而动词的过去式是在动词原形的基础上变化的。动词的过去式可分为规则动词和不规则动词。过去分词（past part...
is,am,are都是"是"的意思，is 的过去式是“was ”，过去分词是“been ”，is是单数，是一般现在时，主语用he,she,it，主语为第三称；例句：He is a bus driver. --- He was a bus driver.am的过去式是“was ”，过去分词是“been ”,主语为"I"；例句：I am a student. --- I wa...
28. Our school did not ___ for Christmas until mid-December. [A] break out [B] break down IC] break in [D] break up 29. His mother retired early on account of poor health. The underlined part means [A] despite [B] with [C] because of [D] according to 30. The whole country...
1. **"I did"** 是过去简单时(Simple Past Tense),强调动作在过去某一具体时间发生并结束,与现在无直接关联。 - 例句:I did my homework yesterday.(我昨天做了作业。) - 分析:动作“做作业”发生在昨天(具体时间),已结束,不涉及对现在的影响。 2. **"I have done"** 是现在完成时(Present Perfe...
I did - 简单过去时,表示过去完成的动作。I have done - 现在完成时,表示在现在之前已完成的动作(时间未明确)。 1. **简单过去时(I did)** - 核心功能:明确强调动作发生在过去的具体时间点/段,与现在无直接关联。 - 例:I did my homework yesterday.(含明确时间状语 "yesterday",动作结束于过去)2....
This study did not involve the direct mediation of other individuals. The neutralization of subjective anger through the disposal of an object may be achieved by recognizing that the physical entity, such as a piece of paper, has been diminished, thus causing the original emotion to also ...
Theo put on a co-worker's gorilla costume and did a full slide down the conference table in the war room. Then he sneaked past the reporters in costume. When he got home, his confused dog went crazy barking until he took off the gorilla head. After nearly three months of feeling adrif...
Simple past:I did my homework at 7 o’clock.This sentence means that I started/finished my homework at 7. Past continuous:I was doing my homework at 7 o’clock.This sentence means that I was in the middle of doing my homework, but I started before 7 and continued doing it after 7....