有時(shí)，“what'’的這種特點(diǎn)也成為改錯(cuò)部分的“題眼”。如：
    (19)(Some) psychologists believe (what) even a person
    (suffers) from amnesia，some (memory) remains in the unconscious．
    ②whatever，whoever，whichever
    上述三個(gè)詞的用法與“what”差不多：意義上表示一種強(qiáng)調(diào)。但在考題中出現(xiàn)的頻率不及"what”高。
    ③as，than
    本來“ss”和"than"作為關(guān)聯(lián)詞只有連接主句和狀語從句的作用，但在托福語法考題中如果符合上面提到的“省略”要求的兩個(gè)條件——主句的主語與從句的主語邏輯上相一致；從句以“be'’的適當(dāng)形式作謂語的“主一系一表”結(jié)構(gòu)或“類主一系一表”結(jié)構(gòu)——這兩個(gè)詞除“正?！钡倪B接作用還充當(dāng)從句的主語：如John’s father was such a stingy man that he seldom spent On his son as much as was necessary．． Mark was delighted tO see his new flat Was larger than was expected．．．
    上面的兩個(gè)句子中，“as”和“than’分別充當(dāng)了從句的主語。
    三．變性
    “變性”是指"after"和“before”所引導(dǎo)的從句在從句的主語與主句的主語一致的時(shí)候可以由從句變?yōu)榻樵~(before、after由關(guān)聯(lián)詞變成介詞，動(dòng)名詞短語作介詞賓語)。
    如：Before he became the 39th President Of United States，Jimmy Carterhad been the governor Of Georgia．
    變成： Before becoming the 39th President Of…
    四.變形
    “變形”指的是"because"、“since"、“as”和“for'’引導(dǎo)的原因狀語從句在從句的主語與主句的主語一致的時(shí)候由從句變成分詞短語。如：
    AS she was the first woman to serve in this local court，she enjoyed a greater popularity than her male colleagues。
    變成： “Being the first woman tO serve．．．"