what i want to emphasize here is that XXX
what 引導的是主語從句,what是引導詞--連接代詞,在主語從句中作賓語,該主語從句的原型你可以理解為“I want to emphasize …….”,因為這是個完整的句子,無法在一個復雜的句中作主語,故把“……”部分用what替代,放在句首,構(gòu)成主語從句,what在主語從句中可譯為“…所…”“什么所如何的”,如這里翻譯為“我所想強調(diào)的”.
主語從句可以由下列連詞,連接代詞和連接副詞引導,且不能省略.
連詞 that,whether
連接代詞 what,whatever,who,whoever等
連接副詞 when,where,how,why
1.that 和whether在主語從句作用中只是引導主語從句,在從句中不充當成分,不能省略.
如：That the earth is round is true.
Whether he will come is doubtful.
2.連接代詞who,which和連接副詞when,where,how,why都可以引導主語從句,在從句中作主語、賓語和狀語,不能省略.由它們引導的主語從句,也可以用形式主語it引導.
如：Who let out the news remains unknown.=it remained unknown who let out the news.
誰走漏了消息仍然不得而知.
3.關系代詞what,whatever,who,whoever在主語從句中擔當成分,不能省略.此類主語從句不可以用形式主語it引導.
如：What he said at the meeting is important.(what在主語從句中作賓語,不可省略)
Whenever the school sports will be held is not known yet.(Whenever在主語從句中作狀語,不能省略)
“is that XXX”是系表結(jié)構(gòu)共同構(gòu)成謂語部分,that引導表語從句,如：My idea is that we all go to school on foot.what the most impotant thingsis that what the most impotant is that 按照你這樣說那么第一個句子就不正確咯？這兩個句子 表述都是正確的嗎？幫我分析一下句子成分吧謝謝可以直接說The most important thing is (that I love her), 為什么要加what呢？如果非要用what引導主語從句，be動詞要提到the most important thing前，后面再加謂語，如：What is the important thing depends on your choice. What is the important thing is that you love her.(實際上此句語法上是不錯的，但就很羅嗦了，不符合語言簡練的規(guī)則)