The teacher scaffolds the linguistic content, i.e. helps learners say what it is they want to say by building a complete utterance together with the students.
老师好!这里的say what it is they want to say怎么分析结构?it is是多余的吗?
They want to say something.
用强调句型情调something,得到:
It is something (that)they want to say. (强调句型的that可以省略)
就上面句子的something提问,得到特殊疑问句:
What is it they want to say?
去问号、去倒装,就得到名词性疑问分句:
what it is they want to say
然后你就可以用这个名词性从句作名词性成分,如主语、宾语、表语、同位语等。你的句子中,这个名词性疑问分句作不定式say的宾语。
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