Many other new techniques are now available that enable more research to..请帮忙分析句子结构完整句子:Many other new techniques are now available that enable more research to be done in the test tube to see if chemicals produce harmful

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Many other new techniques are now available that enable more research to..请帮忙分析句子结构完整句子:Many other new techniques are now available that enable more research to be done in the test tube to see if chemicals produce harmful
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Many other new techniques are now available that enable more research to..请帮忙分析句子结构完整句子:Many other new techniques are now available that enable more research to be done in the test tube to see if chemicals produce harmful
Many other new techniques are now available that enable more research to..请帮忙分析句子结构
完整句子:Many other new techniques are now available that enable more research to be done in the test tube to see if chemicals produce harmful biological effects.
请问这句话最主干的主语、谓语和宾语是什么?

Many other new techniques are now available that enable more research to..请帮忙分析句子结构完整句子:Many other new techniques are now available that enable more research to be done in the test tube to see if chemicals produce harmful
1、句子主干结构:
【Many other new techniques 主语,定语从句先行词】【are 谓语】now【 available表语】 【that enable more research to be done in the test tube 分隔式定语从句】【 to see if chemicals produce harmful biological effects 不定式短语,目的状语】.
这里难点是【分隔式定语从句】.使用的原因是:定语从句内容过长,还带有目的状语,且目的状语中还含有if宾语从句.如果用成正常定语从句,句子主干结构被分得太开而不易理解——
【Many other new techniques主语】 【that enable more research to be done in the
test tube 定语从句】【are 谓语】now【 available表语】 【to see if chemicals produce
harmful biological effects 不定式短语,目的状语】.
2、从句结构:
①定语从句
【that 关系词,从句主语】【 enable 谓语】【 more research宾语 】【to be done in the test tube 不定式短语,宾语补足语】
② if宾语从句
if 【chemicals主语】【 produce谓语】【 harmful biological effects宾语】
祝你开心如意!

这句话不是主谓宾结构而是主系表结构,Many other new techniques 做主语,are是系动词, available 是表语, that 引导状语从句。

techniques are available这是主语+系动词+表语的结构
that后面整一句从句用来修饰前面整个主句