maintain的过去式是什么
英语里面，很多动词的过去式都是在后面直接加ed，maintain的过去式也是在后面直接加ed。下面是学习啦小编为你整理的maintain的过去式的相关资料，希望大家喜欢!
maintain的过去式
过去式： maintained
maintain的过去式maintained例句
1. They have maintained their optimism in the face of desolating subjugation.
面对遭征服的悲惨命运，他们保持了乐观的态度。
2. He maintained an ambivalent attitude to the Church throughout his long life.
在他漫长的一生中，他对____信仰始终是一种摇摆不定的态度。
3. The married women of Shitamachi maintained the custom of blackening their teeth.
下町的已婚女性还保留着把牙齿涂黑的习俗。
4. He had maintained a rigid diet, shedding some twenty pounds.
他严格地坚持节食，减了差不多20磅。
5. He has maintained that the money was donated for international purposes.
他坚称这笔捐款将用于国际用途。
6. Fourthly, the natural enthusiasm of the student teachers should be maintained.
第四点，实习教师本来的热情应该得到保持。
7. Crowley maintained a stream of invective and abuse against Waite.
克劳利连珠炮似的对韦特骂个不停。
8. Mr Matthews maintained that he had done nothing improper.
马修斯先生坚称他没有做过非法的事情。
9. Control of materials could be maintained by locking up bombs.
把炸弹锁起妥藏可实现对物资的控制。
10. The cars are getting older and less well-maintained.
车越来越旧，保养得也越来越差。
maintain的常见用法
vt.保持; 保养; 坚持; 固执己见
1. In New Zealand, the Maori people maintain a strong cultural tradition.
在新西兰，毛利人保持着深厚的文化传统。
2. The government was right to maintain interest rates at a high level.
政府维持高利率的做法是正确的。
3. The psychiatrist must learn to maintain an unusual degree of objectivity.
精神科医生务必要学会保持超乎寻常的客观态度。
4. She could not maintain her balance and moved in a wobbly fashion.
她无法保持平衡，走路颤颤巍巍。
5. His critics maintain that he's responsible for many of Algeria's ills.
他的批评者们坚持认为他应该为阿尔及利亚所面临的许多难题负责任。
6. Few people nowadays are able to maintain friendships into adulthood.
如今很少有人能将友谊维持到成年。
7. The pilot throttles back slightly to maintain level flight.
飞行员稍稍减速，以保持水平飞行。
8. The authorities have said they will attempt to maintain essential services.
当局已表示他们将努力维持公共基础服务。
9. The situation in the capital forced them to maintain military preparedness.
首都的形势迫使他们时刻做好军事准备。
10. He has the power to use force to maintain public order.
他掌握着动用武力维持公共治安的权力。
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