Is it necessary to complete the design before the National D

来源：学生作业帮编辑：搜狗做题网作业帮分类：英语作业时间：2024/06/30 15:23:32

Is it necessary to complete the design before the National Day?是什么意思
Is (it ）necessary to complete the design before the National Day?
括号里为什么用it不用this,that和he却用it
顺便将这句话翻译一下

这是一个基本机构
it +be动词 +adj.+to do sth .翻译为做某事.
it 做形式主语,这是固定的,不能使用其他代词代替
翻译：必须要在国庆节之前完成这份设计吗?
无疑后请采纳.
书山有路勤为径,学海无涯苦作舟.
-----------与君共勉-----------

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