1
use the perfect tense
这里'use'是及物动词，直接跟名词短语。
You should use the perfect tense to describe past events with present relevance.
你应该使用完成时态来描述与现在相关的过去事件。
完成时（态）
先理解核心含义，再看它在真实句子里的用法。
完成时（态）
A grammatical tense used to express an action or state that has been completed, formed in English with have/has/had plus a past participle.
You should use the perfect tense to describe past events with present relevance.
你应该使用完成时态来描述与现在相关的过去事件。
完成时
A verb form indicating that an action or state has been completed at the present time, in the past, or shall be completed in the future.
The perfect tense can be tricky for English learners.
完成时态对英语学习者来说可能有点难。
We usually use the perfect tense to connect a past action with the present.
我们通常用完成时态把过去的动作和现在联系起来。
Could you write this sentence in the perfect tense?
你能用完成时态写这个句子吗？
这里'use'是及物动词，直接跟名词短语。
You should use the perfect tense to describe past events with present relevance.
你应该使用完成时态来描述与现在相关的过去事件。
介词'in'表示所处的状态。
This verb form is in the perfect tense.
这个动词形式是完成时态。
Not this
Perfect tense is used to describe past actions.
Use this
The perfect tense is used to describe past actions.
中文学习者常遗漏冠词'the'，因为汉语中没有冠词。加冠词后句子才符合英语语法。
Not this
I am studying about perfect tense.
Use this
I am studying the perfect tense.
在英语中，表示'学习某种时态'时通常直接跟宾语，不加介词'about'。去掉'about'并加冠词更自然。
Choose the next layer that will help you use perfect tense 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 perfect tense naturally, then get feedback on meaning, tone, grammar, and phrasing.
Revisit a common error or keep this word in your review list.
完成时态，由have+过去分词构成
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.