完成时

Further perfection of the chattel security legislation will not only be helpful to form a perfect chattel security legislative system after the compilation of the civil code of the PRC, but also facilitate the financing and the grant and acceptance of credit as well as promote the development of economy.

动产担保立法的进一步系统与完善，不仅有助于在民法典编纂完成时形成一个健全的动产担保法律体系，亦能便利资金的融通和信用的授受，促进经济的发展。

When he grew up, he worked as a sailor on a riverboat for some time and therefore he got his pen name, Mark Twain .

文章的时态主要用过去时，最后两句与现在有关，因此用了现在完成时和一般现在时。

The reason that this Woodcut is called wood-cut Print is the whole woodcut screen can not be copied because the woodcut is worked in the same piece of board and only the final printed empaistic design and lines can be retained after it is carved and painted for several times before finished.

绝版木刻，在同一块板上，进行多次刻作和套色，作品完成时，在木板上只保留有最后一遍印制色彩时的浮雕图案和线条，整幅画面无法再复制，故名&绝板&。

After a further analysis, the two intralingual factors, verb salience and temporal adverbials, are found to significantly affect simple past and present perfect use and their tense marking.

通过测试动词突显度和时间状语两种语内因素对一般过去时和现在完成时的影响，发现他们能够显著影响其使用和时态标记。

And it was perhaps the first time she had heard me give a lengthy speech, using the kind of English I have never used with her-a speech filled with carefully constructed grammatical phrases, burdened, it suddenly seemed to me, with nominalized forms, past perfect tenses, conditional phrases, all the forms of standard English that I had learned in school and through books, the forms of English I did not use at home with my mother.

这也许是她第一次听我长篇大论，用的是我从未在她面前用过的那种英语-演讲中满是精心构造的、合乎语法的词组，大量名词化结构，过去完成时，条件短语（这些我似乎是突然发现的）。所有这些我在学校和书本中学到的标准语言结构，都不是我在家里和母亲交谈时使用的英语形式。

The suffix ''- ka -'' is attached to some perfects and aorists.

后缀 ''-ka-''被附加到某些完成时和不定过去时。

They ask more questions when I bring up the topic of life as an American teenager than when I try to explain gerunds.

与讨论如何正确使用现在完成时相比，当我们谈起美国大学的生活时，他们显得更为兴奋。

Ed"词源解释:Etymology: Middle English, from Old English -ed,-od,-ad; akin to Old High German -t, past participle ending, Latin -tus, Greek -tos, suffix forming verbals

这个问题可能是属于语言学范畴了，请语言专家指点迷津。再比如，现在进行时为什么要加助词am，is，are；现在完成时为什么要加助词has，have？但这个问题我已搞清楚了。

Practice the use of the simple past and the simple past perfect.

L14 合成带过去时及过去完成时的时间状语从句。

Professor Johnson is said _C__some significant advance in his resea rch in the past year.

当动作发生在谓语动词之前时，应用不定式的完成时表示。

In the negative and interrogative forms, of course, this is identical to the non-emphatic forms.

。但是，在否定句或疑问句里，这种带有"do"的方法表达的效果却没有什么强调的意思。

Go down on one's knees;kneel down

屈膝跪下。。。下跪祈祷