原句it是做形式主語(yǔ),真正的主語(yǔ)是后面that引導(dǎo)的從句,相當(dāng)與that...is known to all.
it改成What之后,就是What引導(dǎo)的主語(yǔ)從句了,這時(shí)that前要加is,變成What is known to all is that...這里that引導(dǎo)第二個(gè)系動(dòng)詞is后的表語(yǔ)從句.
It’s known to all that.把it換成what,that后面為什么要加上is.
It’s known to all that.把it換成what,that后面為什么要加上is.
英語(yǔ)人氣：111 ℃時(shí)間：2019-12-14 18:19:36
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