不定式是英語語法的一個(gè)重要的版塊，今天，小編為同學(xué)們準(zhǔn)備了相關(guān)的不定式語法體系下的不定式的完成進(jìn)行體的使用規(guī)則，一起來看看吧！

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一、動(dòng)詞不定式的完成進(jìn)行體表示不定式動(dòng)作發(fā)生在謂語動(dòng)作之前，并一直在進(jìn)行著。其結(jié)構(gòu)與不定式的完成體類似。如：
He is said to have been translating Luxun's works into English . 據(jù)說他一直把魯迅的著作譯成英文。(現(xiàn)仍然在譯)
She seems to have been teaching? in that school for fifteen years . 她似乎已經(jīng)在那所學(xué)校教了15年書了。(仍在教，強(qiáng)調(diào)繼續(xù)教)
The kind-hearted millionaire is very happy to have been helping the poor . 那個(gè)善良的富翁一直在幫助窮人，并為此感到非常高興。(仍在幫)
We supposed to have been living? here till our children grew up . 我們原以為可以在這一直住下去，直到我們的孩子長大。(但我們得搬家了)


二、動(dòng)詞不定式完成體的被動(dòng)式
當(dāng)主語與不定式動(dòng)詞有被動(dòng)關(guān)系，且不定式所表示的動(dòng)作又先于謂語動(dòng)詞動(dòng)作發(fā)生時(shí)，動(dòng)詞不定式就要用完成體的被式。如：
The book is said to have been translated into many languages . 據(jù)說這本書被譯成很多種語言。
The oranges were thought to have all been sold? out . 人們認(rèn)為桔子已經(jīng)全部賣完。
He is very sad to have lost four bikes in less than one year . 他因不到一年就丟了4部自行車而感到很傷心。

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