跳；跳跃
先理解核心含义，再看它在真实句子里的用法。
跳；跳跃
To push yourself suddenly off the ground into the air.
The cat jumped over the fence.
那只猫跳过了篱笆。
迅速使自己向上、向下或任意水平方向跃起,使身体因动量而腾空。
To propel oneself rapidly upward, downward and/or in any horizontal direction such that momentum causes the body to become airborne.
使自己从高处跃下。
To cause oneself to leave an elevated location and fall downward.
通过弹跳或跳跃越过；跳过。
To pass by means of a spring or leap; to overleap.
使用降落伞从飞机或高处跳下
To employ a parachute to leave an aircraft or elevated location.
jump
Base
原形
jumps
3rd person
第三人称单数
jumping
-ing
现在分词
jumped
Past
过去式
jumped
Past participle
过去分词
I jump every morning.
我每天早上跳。
She jumped over the fence.
她跳过了篱笆。
He is jumping up and down.
他正在上下跳。
规则动词
Children are jumping on the trampoline.
孩子们正在蹦床上跳跃。
She jumps rope every morning for exercise.
她每天早上跳绳锻炼身体。