be bitten by sb/sth
被动结构，强调状态。
He was bitten by a mosquito last night.
他昨晚被蚊子咬了。
bite的过去分词
先理解核心含义，再看它在真实句子里的用法。
bite的过去分词
past participle of bite: to grip, cut off, or tear with the teeth; to cause a sharp pain or sting; to penetrate or cut
一般现在时
He sometimes bites his nails.
他有时咬指甲。
现在完成时
She has bitten her lip nervously.
她紧张地咬住了嘴唇。
passive
The apple was bitten by a worm.
苹果被虫子咬了一口。
不规则动词，过去分词为bitten
He has been bitten by a dog.
他被狗咬了。
用法提示：bitten作为过去分词，与has been构成现在完成时的被动语态，表示被咬的动作。
She was bitten by mosquitoes last night.
她昨晚被蚊子叮了。
用法提示：bitten作为过去分词，与was构成一般过去时的被动语态，表示被叮咬。
The cold wind had bitten his face.
寒风刺痛了他的脸。
用法提示：bitten作为过去分词，与had构成过去完成时，表示刺痛的感觉。
被动结构，强调状态。
He was bitten by a mosquito last night.
他昨晚被蚊子咬了。
get型被动，强调动作或意外。
She got bitten by a stray dog while jogging.
她慢跑时被一只流浪狗咬了。
强调咀嚼过程，与咬伤的bite不同
表示持续用力咬，bite常指一次性动作
指小口轻咬，bite力度较大
强调咬碎硬物的声音，bite无此含义
grammar · medium
易错句子He bitten me yesterday.
正确表达He bit me yesterday.
错误地将过去分词'bitten'用作一般过去时。一般过去时应用不规则动词bite的过去式'bit'。
grammar · medium
易错句子He has bited me.
正确表达He has bitten me.
错误地使用了规则变化形式'bited'。bite的过去分词是不规则形式'bitten'。
bit是bite的过去式，bitten是过去分词，时态和用法不同
发音相近，但词义完全不同：beaten与打击有关，bitten与咬有关
拼写相似，但含义和词性完全不同：bitter是形容词，bitten是动词过去分词
被狗咬
He was bitten by a dog when he was a child.
他小时候被狗咬了。
咬掉
She has bitten off more than she can chew.
她自不量力。
咬进，咬到
He has bitten into the sandwich.
他咬了一口三明治。
一朝被蛇咬，十年怕井绳
After being cheated once, he is now cautious. Once bitten, twice shy.
被欺骗一次后，他现在很谨慎。一朝被蛇咬，十年怕井绳。
迷上旅行
She has been bitten by the travel bug and travels every chance she gets.
她迷上了旅行，一有机会就去旅行。
被咬
If you play with snakes, you might get bitten.
如果你玩蛇，可能会被咬。
词根 bit- + 后缀 -en (表示过去分词)
词根 bit- (以e结尾，现在式)
词根 bit- (过去式)
词根 writ- + 同后缀 -en
一朝被蛇咬，十年怕井绳
After losing his money in that scam, he's once bitten, twice shy about any investment opportunity.
在那场骗局中损失了钱之后，他对任何投资机会都一朝被蛇咬，十年怕井绳。
贪多嚼不烂；承担超出能力的事
By taking on three major projects at once, she's bitten off more than she can chew.
同时接手三个大项目，她真是贪多嚼不烂。
对某事产生浓厚兴趣；着迷
He was bitten by the travel bug after his first trip abroad.
第一次出国旅行后，他就对旅行产生了浓厚兴趣。
被放射性蜘蛛咬了一口后，彼得·帕克变成了蜘蛛侠。
He was bitten by a radioactive spider in the comic book.
在漫画书中，他被放射性蜘蛛咬了一口。
一朝被蛇咬，十年怕井绳。
After being bitten by a dog, she became once bitten, twice shy.
被狗咬过一次后，她变得一朝被蛇咬，十年怕井绳。
Dictionary facts from ECDICT, WIKTIONARY.