At the age of twelve years,the human body is at its most vigorous.解析后半句的结构.我也知道是主系表结构 at its most vigorous 中vigorous 是形容词 at its 是什么用法啊，

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At the age of twelve years,the human body is at its most vigorous.解析后半句的结构.我也知道是主系表结构 at its most vigorous 中vigorous 是形容词 at its 是什么用法啊，

At the age of twelve years,the human body is at its most vigorous.解析后半句的结构.我也知道是主系表结构 at its most vigorous 中vigorous 是形容词 at its 是什么用法啊，
At the age of twelve years,the human body is at its most vigorous.解析后半句的结构.
我也知道是主系表结构 at its most vigorous 中vigorous 是形容词 at its 是什么用法啊，

At the age of twelve years,the human body is at its most vigorous.解析后半句的结构.我也知道是主系表结构 at its most vigorous 中vigorous 是形容词 at its 是什么用法啊，
vigorous是形容词作动词使用,否侧有语法错误的.at 后面的短语作表语

主系表结构，介词短语作表语！明白吗

既然主系表结构你清楚，偶就不解释喽。
至于那个介词短语。
讲简单点：“at its best” 含义叫 处在最好的状态~
“at its most vigorous” 其实 叫 “处在最精力充沛的状态”。
“at one's +最高级” 为固定搭配 表明 “处于 最...的状态”！
望采纳，有追问必答！\(^o^)/~...

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既然主系表结构你清楚，偶就不解释喽。
至于那个介词短语。
讲简单点：“at its best” 含义叫 处在最好的状态~
“at its most vigorous” 其实 叫 “处在最精力充沛的状态”。
“at one's +最高级” 为固定搭配 表明 “处于 最...的状态”！
望采纳，有追问必答！\(^o^)/~

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主系表结构，介词短语作表语

可以肯定的是，楼主的句子有误，vigorous（形容词）应是vigor（名词）同时 most改为greatest，即，At the age of twelve years,the human body is at its greatest vigor 或者 At the age of twelve years,the human body is most vigorous。才对。都是个系表结构。其...

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可以肯定的是，楼主的句子有误，vigorous（形容词）应是vigor（名词）同时 most改为greatest，即，At the age of twelve years,the human body is at its greatest vigor 或者 At the age of twelve years,the human body is most vigorous。才对。都是个系表结构。其中第一个句子，是介词短语at its greatest vigor 作表语，而第二个句子，是形容词做表语。
【俊狼猎英】团队为您解答。祝您进步！

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At the age of twelve he became __________ in science. At the age of twelve 等于什么 （四个空格） at the age of twelve ,Edison began____newspaper on the trainAsell Bselling Csold Dsells at the age of at the age of at the age of 05.AT the age of twelve he became __________ in science. 73.He left school to work at the age of twelve.(同意句) He had to （）it at the age of twelve and started to work in the fields 空格填什么? 英语at the age of?at the age of? 翻译 at the age of at the age of=? 翻译：at the age of at the age of造句 at the age of= at the age of five .He left school to work at the age of twelve.(同意句)He left school to work _____ he ____ twelve years old. by the age of,at the age of的区别?