1
lubricate sth
lubricate 是及物动词，后面直接接被润滑的对象。
The mechanic lubricated the engine before the race.
比赛前，机械师给发动机加了润滑油。
润滑；加润滑油于
lubricates — third person singular of lubricate
先理解核心含义，再看它在真实句子里的用法。
润滑；加润滑油于
to make something slippery or smooth by applying a lubricant, usually to reduce friction
The mechanic lubricated the engine before the race.
比赛前，机械师给发动机加了润滑油。
使润滑；涂润滑剂以减少摩擦
To make slippery or smooth (normally to minimize friction) by applying a lubricant.
lubricate
Base
原形
lubricates
3rd person
第三人称单数
lubricating
-ing
现在分词
lubricated
Past
过去式
lubricated
Past participle
过去分词
He lubricates the machine every morning.
他每天早上给机器上润滑油。
She lubricated the door hinge yesterday.
她昨天给门铰链上了润滑油。
They have lubricated all the gears.
他们已经润滑了所有的齿轮。
规则动词，过去式和过去分词加-ed
I need to lubricate the bicycle chain every month to keep it running smoothly.
我每个月都需要给自行车链条上油，以保持其顺畅运转。
He lubricated the door hinges with oil to stop them from squeaking.
他给门铰链上了油，以防止它们发出吱吱声。
The mechanic is lubricating the engine parts carefully.
机械师正在仔细地润滑发动机部件。
lubricate 是及物动词，后面直接接被润滑的对象。
The mechanic lubricated the engine before the race.
比赛前，机械师给发动机加了润滑油。
用介词 with 引出所使用的润滑剂。
She lubricated the keyhole with graphite powder.
她用石墨粉润滑了锁孔。
用动词不定式表示润滑的目的。
Lubricate the wheels to reduce friction.
给轮子上润滑油以减少摩擦。
Not this
You should lubrication the engine regularly.
Use this
You should lubricate the engine regularly.
lubrication 是名词，lubricate 才是动词；情态动词 should 后接动词原形，因此要用 lubricate。
Not this
Lubricate oil to the machine before use.
Use this
Lubricate the machine with oil before use.
lubricate 的宾语是被润滑的对象，而润滑剂要用介词 with 引出；把 oil 当作宾语、用 to 引出机器属于搭配错误。
Focus on the distinctions below. Other candidates are kept compact until a reliable usage note is available.
给发动机加润滑油
You should lubricate the engine regularly to keep it running smoothly.
你应该定期给发动机加润滑油，让它保持平稳运行。
润滑活动部件
This grease is used to lubricate moving parts in heavy machinery.
这种润滑脂用于润滑重型机械的活动部件。
给关节（机械接头）上润滑油
Maintenance workers lubricate the joints of the robot arm.
维修工人给机械臂的关节处上润滑油。
给链条上润滑油
Remember to lubricate the bicycle chain after riding in the rain.
雨后骑车后记得给自行车链条上润滑油。
润滑铰链
The door squeaks, so I need to lubricate the hinges.
门吱吱响，我需要润滑一下铰链。
使事情顺利进行；为……铺平道路
A simple apology lubricated the wheels and the meeting ended on a friendly note.
一句简单的道歉让事情顺利进行，会议在友好的气氛中结束。
Use lubricates naturally, then get feedback on meaning, tone, grammar, and phrasing.
Revisit a common error or keep this word in your review list.
联想：lubricate 里有 lube（润滑油），给齿轮涂上润滑油，转动就顺滑、减少摩擦。
语域：formal 常见场景：technical manuals、mechanical maintenance、automotive care lubricate 多用于技术说明、机械设备维护等正式或书面场景；日常口语中更常说 oil 或 grease。
及物与不及物均可，常与with连用表示‘用…润滑’。
Dictionary facts from ECDICT, WIKTIONARY, WORDNET.