He jumped into the water to save a drowning girl without thinking of his own safety

A little girl was seen to fall into the lake by a PLA man.he jumped into the water to save her. ...~

正确的。第一个句子用的是see sb. do sth. 的被动。其变为被动是：be seen to do sth. 这是感官动词变被动时的规则，主动变被动，切记要加to. 若是see sb. doing sth.变为被动则是：be seen doing .
第二个不定式做的是目的状语。
加油！

breathing

他不顾自己的安危，跳入水中去救一个溺水的女孩。

他奋不顾身地跳下水去救一名溺水的女子.

大概意思就是这样

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永新区17746765551： 他跳进河里是为了救那个男孩 的英语怎么说(3种表达方式) - ？
应响施普：[答案] He jumped into the river to save the boy. He jumped into the river so that save the boy. He jumped into the river in order to save the boy

永新区17746765551： He jumped - _into the river to save the girl.空上填deep,为什么不是deeply?jump不是动词么? - ？
应响施普：[答案] deep可以做副词,形容实际的深度;deeply通常表示情感方面的深度,如:she lfalls in love with the man deeply.

永新区17746765551： 他跳进水里用英语咋说？
应响施普： He jumped into the water .

永新区17746765551： He jumped into the water when he heard a boy -- (call) for help.为什么? - ？
应响施普： calling hear sb do sth和hear sb doing sth.hear sb do sth表示“听到某人做了某事”,hear sb doing sth.表示“听到某人正在做某事”,这题目用doing形式最好,强调动作正在发生.一些感观动词如hear, see, feel, watch等后面既可以接宾语+do sth, 也可接宾语+动词-ing形式构成复合宾语.根据情景及句意的需要许多时候只能用一种,但有时两者都可用而意义没多大区别.

永新区17746765551： 翻译 He jumped into the car and found a dent in th - ？
应响施普： dent [dent] 在这里用作名词,是“凹痕”的意思.

永新区17746765551： 他跳上公共汽车,手里拿着他的午餐下面两句那句是正确的1 he jumped into the bus,holding a number of cup - type luncheon2 he jumped into the bus ,holding ... - ？
应响施普：[答案] luncheon 指正式的午餐,而手里拿着的,不可能是 luncheon,只能是盒装的午餐,那是 lunchbox 所以两句都不对. 如果换成 lunchbox,则可以用复数,也可以不用,用复数表示多于一份,不用则表示只有一份.

永新区17746765551： 翻译成英语:他奋不顾身下水救人,但是不幸被激流卷走. - ？
应响施普： 你好!He jumped into the water to offer help without considering his own safety, but unfortuanatelly, he was washed away by the swift current.地道的翻译就不能直译.百度教育团队【海纳百川团】为您解答 如满意,请点击“选为满意答案”按钮,谢谢~

永新区17746765551： he inot jumped the lake这几个单词怎么组成句子,意思又是什 - ？
应响施普： He jumped into the lake.他纵身跳入了湖泊之中.

永新区17746765551： 他跳进湖里救出了那个孩子,结果却摔断了自己的腿怎么翻译 - ？
应响施普： He jumped into the lake to save the child, which made his leg broken

永新区17746765551： He jumped into a - --------and died中间该填什么?？
应响施普： abyss, swamp, bonfire, frozen pond 都可以