Level 4至Level 6出现的动词时态形式，以现在完成时(present perfect)、现在完成进行时(present perfect continuous)、过去完成进行时(past perfect continuous)为主，句子结构大部分是符合句(compou...
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Present Perfect Progressive 现在完成进行时 ; 现在完成进行式 ; 如今完成停止时
Forms of the Present Perfect 现在完成时的形式 ; 如今完成时的方式
Meanings of the Present Perfect 现在完成时的含义 ; 完成时的含义 ; 如今完成时的含义
Present Perfect Continuous 现在完成进行时态 ; 现在完成进行时 ; 行时 ; 如今完成停止时
The Present Perfect Continuous 现在完成进行时
The present perfect progressive 现在完成进行时
use of the present perfect 目前完美使用 ; 使用本完美 ; 现在完成的使用
以上来源于: WordNet
ADJ In grammar, the present perfect tenses of a verb are the ones used to talk about things that happened before the time you are speaking or writing but are relevant to the present situation, or things that began in the past and are still happening. The simple present perfect tense uses "have" or "has" and the past participle of the verb, as in "They have decided what to do." 现在完成时的 [ADJ n]
The present perfect is covered in Unit 8.
现在完成时在第8单元讲解。
'I have eaten' is the present perfect tense of the verb 'to eat', 'I had eaten' is the past perfect and 'I will have eaten' is the future perfect.
I have eaten是动词eat的现在完成时；I had eaten是过去完成时；I will have eaten是将来完成时。
When we use the present perfect, there is a connection with now.
当我们使用现在完成式时，是和现在有关联的。
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