GMAT的SC考題中經常出現what從句，這是很多同學的痛點，帶有what從句的選項有時候對，有時候錯，基本沒有很強的猜題規律的，需要我們在具體題目當中去判斷。下面是小編整理的該如何去思考GMAT SC中的what從句，希望對大家有用，更多訊息請關注應屆畢業生網。
其實what從句就是一個名詞性從句(看不懂這個術語的童鞋就忽略吧，並無大礙)，what我們稱之為關係代詞(看不懂的.依然可以忽略)，既然是代詞，一定要有所指代的，所以我們在判斷what從句對還是不對，第一步就是找出what從句在句子當中語義上應該指代誰。
舉個栗子：
What you said is right這句話裡面what就是指代你說的話，所以這句話完全等同於The word that you said is right. 大家注意到沒，後面的句子其實就是把what的指代物件the word直接給出了，然後加一個that(如果是人加who/whom)變成定語從句，這樣句子是不是好理解很多。
沒看懂??!!再來一個。
He is not what he was five years ago.還是一樣首先找出what在句子當中指代什麼，然後加上that/whom，其他部分照抄，所以這句話等同於He is not the man whom he was five years ago。
好啦，咱們再來幾道真題：
The ancient Anasazi harvested such native desert vegetation as the purple-flowered bee plant, what they now commonly call wild spinach in northern Arizona and other parts of the southwestern United States.
A. what they now commonly call
B. a plant that they now commonly call
C. now commonly called
D. and is now commonly called
E. which it is now commonly called
這題當中A選項裡面的what從句的what指代啥????想十秒。。。。
對!就是plant，所以A選項完全等同於a plant that they now commonly call，咦。。。。是不是就是B選項，所以秒排AB了，因為能選A就能選B，肯定都錯。(我就不仔細分析每個選項啦哈，這個專題只是幫助大家瞭解what從句而已)
Even though more money was removed out of stock funds in July as in any month since October 1987, sales of fund shares in July were not as low as an industry trade group had previously estimated.
A. as in any month since October 1987, sales of fund shares in July were not as low as
B. as had been in any other month since October 1987, sales of fund shares in July were not as low as what
C. than there was in any other month since October 1987, sales of fund shares in July were not as low as that which
D. than in any month since October 1987, sales of fund shares in July were not as low as
E. than in any other month since October 1987, sales of fund shares in July were not as low as what
這道題E選項裡面也有what從句，而且是出現在比較從句當中，比較從句。。。。貌似又是很多人的痛，所以E選項算是痛得二次方了：)
這裡的what根據語義判斷，應該指代sales of fund shares，所以E選項最後部分等於sales of fund that an industry trade group had previously estimated。這樣as low as前後比較是不是很平行!sales和sales比較，七月份的sales和之前所估計的sales比，所以是對的。
Unearthed in China, fossils of feathered dinosaurs offer the most dramatic evidence yet discovered of the close evolutionary relationship between dinosaurs and birds.
A. offer the most dramatic evidence yet discovered of the close evolutionary relationship between dinosaurs and birds
B. offer evidence more dramatic than what has yet been discovered of the close evolutionary relationship between dinosaurs and birds
C. offer more dramatic evidence of the close evolutionary relationship than any yet discovered between dinosaurs and birds
D. have offered the most dramatic evidence of the close evolutionary relationship between dinosaurs and birds that have yet been discovered
E. have offered more dramatic evidence than any that has yet been discovered of the close evolutionary relationship between dinosaurs and birds
這一題B選項裡面的what應該指代的是evidence,，所以than後面的what從句等於the evidence that has yet been discovered......這樣看than前後比較物件也很平行啊，evidence和evidence比啊，那為啥是錯的呢??!!!因為than後面的evidence前面應該加上一個other，比的時候要把自身排除出去，這裡的比較級其實表達的是最高階的意思。
While digging in the Egyptian desert, huge fossil bones have been found by paleontologists, which appears to have been the second most massive dinosaur that ever lived.
A. huge fossil bones have been found by paleontologists, which appears to have been
B. huge fossil bones have been found by paleontologists, which appear to be from
C. it appears that paleontologists have found huge fossil bones that are from
D. paleontologists have found huge fossil bones from what appears to be
E. paleontologists have found huge fossil bones, which are from what appear
這道題DE裡面都有what，但是注意what後面的動詞appear單複數不一樣，這明顯就是考察what的指代，然後決定後面的動詞形式，這裡的what根據句意指代dinosaur，是單數名詞，所以應該用appears.
