It -is- thanks- to- his- help- that- I- have- learned- a- lot 这是 对原因状语的强调 把it is.that 去掉 原句是thanks to his help I have learned a lotIt is 是强调句的虚词 thanks to his help是原因状语 that是强调句的虚词 I是主语 have learned是谓语 a lot是宾语thanks to 是由于 因为 的意思
强调句型：It +is/was+...that/who... It is his help that makes me learn more. 判断It is/was...that.who 是不是一个强调句，只要把It is/was，that.who全部拿掉，看看剩下的词语能否连成一句通顺的陈述句，如果能则说明是强调句型。
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