Word
unfastened
解开(尤指衣服或带子);松开
核心释义
to cause something to become undone; to become undone or untied
解开(尤指衣服或带子)( unfasten的过去式和过去分词 ); 松开; 解开;脱开;松开
用法In use
She unfastened her seatbelt as soon as the plane landed.
用法提示:这里“unfastened”是动词过去式,表示解开安全带的动作。
He unfastened the buttons on his shirt because it was too hot.
用法提示:“unfastened”是动词过去式,表示解开纽扣的动作。
The child unfastened the straps of her backpack to take out a book.
用法提示:“unfastened”是动词过去式,表示解开背包带子的动作。
be unfastened
表示状态,用be动词+过去分词作表语。
The belt was unfastened.
腰带被解开了。
unfasten sth
过去式形式为 unfastened。
She unfastened her necklace.
她解开了项链。
unfastened + noun
unfastened 作定语修饰名词。
He noticed the unfastened button.
他注意到了那颗未扣好的纽扣。
Verb forms
base unfasten · third person unfastens · -ing unfastening · past unfastened · past participle unfastened
常见错误Common mistakes
易错句子Please unfastened your coat.正确表达Please unfasten your coat.
错误使用了过去分词 unfastened 作为祈使句的动词原形,应该用动词原形 unfasten。
易错句子The window is unfastening.正确表达The window is unfastened.
描述窗户的状态(未关紧)应使用过去分词 unfastened 作形容词,而不是现在分词 unfastening,后者表示正在进行的动作。
相关词与表达Connections
易混词Confusing words
- untied
- 解开的(尤指鞋带、绳结等) · untied 专指鞋带、绳结等系物被解开;unfastened 范围更广,可指衣服、带子、锁扣等任何固定物被松开。
- unbuttoned
- 解开纽扣的 · unbuttoned 仅指纽扣被解开;unfastened 可泛指任何闭合方式(如纽扣、拉链、钩环等)被松开。
- unlocked
- 未锁的,开着的 · unlocked 专指锁未被锁上;unfastened 通常不用于锁具,而是用于衣物、带子等可系紧之物。
学习提示Learner notes
语法说明Grammar Note
动词:解开(尤指衣服或带子),松开;形容词:未系紧的,未扣好的
Dictionary facts from ECDICT, WIKTIONARY.