maintain有維持;維修;保養(yǎng);堅持;斷言等意思，那么你知道m(xù)aintain的過去式是什么嗎?下面學習啦小編為大家?guī)韒aintain的過去式和用法例句，希望對大家的學習有所幫助!

　　maintain的過去式和其他時態(tài)：

　　過去式: maintained

　　過去分詞: maintained

　　現(xiàn)在分詞: maintaining

　　maintain的用法：

　　maintain的用法1：maintain的基本意思是“保持”“繼續(xù)”,指采取某種手段或措施保留一種有價值的東西,使其獲得保養(yǎng)并維持良好狀況,有時也指使事情能正常持續(xù)下去,引申可表示“堅持”“主張”“供給”“贍養(yǎng)”等。

　　maintain的用法2：maintain只用作及物動詞,后面可接表示生命、法律、秩序、和平、友誼等名詞作賓語; 也可接that從句,還可接以“to be+ adj .”充當補足語的復(fù)合賓語。

　　maintain的過去式例句：

　　1. They have maintained their optimism in the face of desolating subjugation.

　　面對遭征服的悲慘命運，他們保持了樂觀的態(tài)度。

　　2. He maintained an ambivalent attitude to the Church throughout his long life.

　　在他漫長的一生中，他對____信仰始終是一種搖擺不定的態(tài)度。

　　3. The married women of Shitamachi maintained the custom of blackening their teeth.

　　下町的已婚女性還保留著把牙齒涂黑的習俗。

　　4. He had maintained a rigid diet, shedding some twenty pounds.

　　他嚴格地堅持節(jié)食，減了差不多20磅。

　　5. He has maintained that the money was donated for international purposes.

　　他堅稱這筆捐款將用于國際用途。

　　6. Fourthly, the natural enthusiasm of the student teachers should be maintained.

　　第四點，實習教師本來的熱情應(yīng)該得到保持。

　　7. Crowley maintained a stream of invective and abuse against Waite.

　　克勞利連珠炮似的對韋特罵個不停。

　　8. Mr Matthews maintained that he had done nothing improper.

　　馬修斯先生堅稱他沒有做過非法的事情。

　　9. Control of materials could be maintained by locking up bombs.

　　把炸彈鎖起妥藏可實現(xiàn)對物資的控制。

　　10. The cars are getting older and less well-maintained.

　　車越來越舊，保養(yǎng)得也越來越差。

　　11. She maintained a kind of meek-ness.

　　她保持著一種溫順的態(tài)度。

　　12. He maintained a professional demeanour throughout.

　　他始終保持著專業(yè)人才的風度。

　　13. Throughout his trial he maintained a dignified silence.

　　在整個審訊過程中，他始終沉默以保持尊嚴。

　　14. His car has been well maintained and is in excellent condition.

　　他的車子保養(yǎng)得很好,各種機件狀況極佳.

　　15. The king maintained order within the bounds of his realm.

　　國王在其王國的疆界之內(nèi)維持著秩序.