语法 were held fixed
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语法 were held fixed
He also decided that if an electric current in a wire could move a magnet,then if the magnet were held fixed,and the wire allowed to be mobile,then a current flowing in the wire should cause it to move.
if the magnet were held fixed这句中FIXED是什么用法 为什么不是TO BE FIXED
He also decided that if an electric current in a wire could move a magnet,then if the magnet were held fixed,and the wire allowed to be mobile,then a current flowing in the wire should cause it to move.
if the magnet were held fixed这句中FIXED是什么用法 为什么不是TO BE FIXED
![语法 were held fixed](/uploads/image/z/7319412-36-2.jpg?t=%E8%AF%AD%E6%B3%95+were+held+fixed)
if the magnet were held fixed中的fixed是主语(the magnet)的补语;主语补语是由主动语态中的宾语补足语变化而来的.比如if the magnet were held fixed这句话如果使用主动语态,我们可以这样说:if we(主语) hold(谓语) the magnet(宾语) fixed(宾语补足语).但是在科技文章中,一般是没有动作的执行者的,也就是说句子的主语一般不会是“人”,所以被动语态用得就多.
这句话里不用to be fixed是因为不定式一般表示将要做的动作.if the magnet were held fixed的意思是“如果将磁体/铁固定”,而不是if the magnet were held to be fixed“如果磁体/铁将要(被)固定”吧.(我对这种专业性的内容是外行,见笑.)
这句话里不用to be fixed是因为不定式一般表示将要做的动作.if the magnet were held fixed的意思是“如果将磁体/铁固定”,而不是if the magnet were held to be fixed“如果磁体/铁将要(被)固定”吧.(我对这种专业性的内容是外行,见笑.)
语法 were held fixed
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