discarded
用法要点
句型搭配
discarded 常用作及物动词的过去式或过去分词，后接宾语表示被丢弃的对象，也可用于被动语态强调动作的承受者。
介词用法
discarded 常与介词 as、in、into 等连用，表示丢弃的原因、方式或地点，例如 as useless 强调原因，in the trash 指定地点。
语域说明
discarded 在正式和非正式语境中都常见，但更偏向书面或中性表达，日常口语中可能用 threw away 或 got rid of 替代，学术和商务场景中则更精确。
基础例句
She discarded the broken vase and bought a new one.
她丢弃了破碎的花瓶，买了一个新的。
We discarded the old furniture before moving to a smaller apartment.
在搬到小公寓之前，我们丢弃了旧家具。
He discarded his homework in the trash by mistake.
他不小心把作业丢进了垃圾桶。
The team discarded the initial plan and started over.
团队丢弃了最初的计划，重新开始。
高级例句
In the study, outdated data were discarded to ensure accuracy.
在这项研究中，过时的数据被丢弃以确保准确性。
The company discarded the proposal after cost-benefit analysis showed it was unfeasible.
公司在成本效益分析显示不可行后，丢弃了该提案。
Researchers discarded samples contaminated during the experiment to maintain integrity.
研究人员丢弃了实验中受污染的样本，以保持数据的完整性。
The policy was discarded due to lack of support from stakeholders.
由于利益相关者缺乏支持，该政策被丢弃。
高频搭配
verb
adjective
noun
adverb
preposition
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常见错误
错误在于介词使用不当，discard 表示丢弃时，通常用 in 或 into 指定地点，to 不适用于此语境。
错误在于时态不一致，discarded 是过去式，原因从句应使用过去时 was broken 以匹配主句时态。
近义词辨析
abandoned
abandoned 强调彻底离开或遗弃，常带情感色彩，如放弃责任或地点；discarded 更中性，指丢弃无用物品或想法。
He abandoned his car on the roadside. (情感遗弃) vs. He discarded the old newspaper. (中性丢弃)
disposed of
disposed of 更正式，常指处理或清除废物，强调过程或方式；discarded 更通用，可指简单丢弃，不一定涉及处理。
The waste was properly disposed of. (正式处理) vs. The toy was discarded in the playroom. (通用丢弃)