that什么时候可以省略Until the 18th century,charcoal was the chief fuel used in blast furnaces.这里为什么在used之前加that不可以?(因为这有个选项就是加that的我选了就错了)used在这里是动词么?那这句话不

来源:学生作业帮助网 编辑:作业帮 时间:2024/05/10 05:08:28
that什么时候可以省略Until the 18th century,charcoal was the chief fuel used in blast furnaces.这里为什么在used之前加that不可以?(因为这有个选项就是加that的我选了就错了)used在这里是动词么?那这句话不

that什么时候可以省略Until the 18th century,charcoal was the chief fuel used in blast furnaces.这里为什么在used之前加that不可以?(因为这有个选项就是加that的我选了就错了)used在这里是动词么?那这句话不
that什么时候可以省略
Until the 18th century,charcoal was the chief fuel used in blast furnaces.这里为什么在used之前加that不可以?(因为这有个选项就是加that的我选了就错了)used在这里是动词么?那这句话不就俩动词了?

that什么时候可以省略Until the 18th century,charcoal was the chief fuel used in blast furnaces.这里为什么在used之前加that不可以?(因为这有个选项就是加that的我选了就错了)used在这里是动词么?那这句话不
这是过去分词作后置定语,使用 和 木炭 的关系是被动,所以用过去分词.
加that时,就变成定语从句,从句也是句子,需要有主 谓 宾,所以加that ,这里就得加be动词
Until the 18th century,charcoal was the chief fuel that was used in blast furnaces