1
be + verb-ing
构成进行时的基本结构。
She is reading a book.
她正在读一本书。
进行时；进行时态
progressive tenses — plural of progressive tense
先理解核心含义，再看它在真实句子里的用法。
进行时；进行时态
In grammar, a verb tense used to describe an action or state that is continuing or in progress at the time referred to.
She is reading a book.
她正在读一本书。
进行时的同义词。
Synonym of continuous tense.
I am still learning the progressive tense in my English class.
我还在英语课上学习进行时。
Could you give me another example of the progressive tense?
你能再给我举一个进行时的例子吗？
The teacher wrote the progressive tense on the board and explained it clearly.
老师在黑板上写下进行时，并清楚地讲解了它。
构成进行时的基本结构。
She is reading a book.
她正在读一本书。
与always等连用，表示反复发生的动作，常带感情色彩。
He is always losing his keys.
他老是丢钥匙。
强调说话时正在进行的动作。
I am working on the report at the moment.
我此刻正在写报告。
Not this
I am studying progressive tense.
Use this
I am studying the progressive tense.
中文里没有冠词概念，所以学习者容易遗漏定冠词'the'，表示特指的语法时态。
Not this
I am understanding the progressive tense.
Use this
I understand the progressive tense.
'understand'是静态动词，通常不用于进行时，应用一般现在时表示状态。
Choose the next layer that will help you use progressive tenses with more confidence.
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Focus on the distinctions below. Other candidates are kept compact until a reliable usage note is available.
Use progressive tenses naturally, then get feedback on meaning, tone, grammar, and phrasing.
Revisit a common error or keep this word in your review list.
用于表示进行状态
页面下方列出了常见词形变化。学习时注意它们在句子中的语法位置。
Dictionary facts from ECDICT, WIKTIONARY.