The boy's hands
clenched slowly from anger and helplessness.
请问这里的 from 是什么用法?
网友提供句子语法结构分析如下供网友参考
The boy's hands【主语】 //clenched【谓语动词】 //slowly 【方式状语】//from anger and helplessness【原因状语】.
备注:介词词短语for anger and helplessness作原因状语用来修饰clened slowly动作发生的原因。
for 因为/由于(英文解释show the reason for sth, or used from after some verbs and nouns when mentioning the cause of something.)
She felt sick from tiredness.她累得浑身不对劲。
The problem simply resulted from a difference of opinion.这个问题仅仅是由于意见分歧引起的。
He is suffering from eye ulcers, brought on by the intense light in Australia.
他眼部溃疡,是因澳大利亚强烈的日光照射造成的。
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