考生们在遇到sat考试难点的时候，一般都是背诵以强化对此知识点的熟练掌握，今天小编为大家带来的就是，实际上，对于难点，还是得需要一些例子来巩固下!
4. OC Test 5 S10 14 (名词+to do)
Bats and mosquitoes come out at twilight, and the bats would look for mosquitoes and the mosquitoes would look for people.
(A) and the bats would look for mosquitoes and the mosquitoes would look
(B) and the bats come to look for mosquitoes while the mosquitoes look
(C) the bats look for mosquitoes and the mosquitoes are looking
(D) the bats looking for mosquitoes while mosquitoes would look
(E) the bats to look for mosquitoes and the mosquitoes to look
此题根据连词前后乍一看, 大家会从平行结构之对称原则来做判断, 发现B, C, D三个选项皆存在时态紊乱不对称,结构复杂的问题, E 选项，用了“名词+ 不定式”构成独立主格，而且对称平行，要优于A选项的繁琐句式。因此正确答案是E。
5. OC TEST 6/S5.3 With/without 带起独立主格
The plans were made too hastily, without enough thought behind it.
(A) too hastily, without enough thought behind it
(B) too hasty, without enough thought behind it
(C) too hastily, without enough thought behind them
(D) too hasty, and there is not enough thought behind them
(E) too hastily, and there is not enough thought behind it
with ( without)+宾语(名词/代词)+宾语补足语，宾语通常由名词或代词充当，但代词一定要用宾格.
我们根据简洁原则，将答案锁定前三个，再充分利用原题中的指代，副词修饰，最终将答案锁定C选项。
最后，我们在ISE中综合地看一下吧。
A gray owl flying low (A) across a forest clearing, its wings beating
(B) quietly and its ultra-sensitive ears turned to the faint sounds
(C) made by small creatures concealed
(D) under leaves. No error
(E) (09-5-S4-24)
好多同学深受这题的困扰，问题就在于整个句子的主要动词到底哪个，是fly, beat, 还是turned 呢?也有同学根据平行结构，即刻判断B选项beating错误，因为它与and 后面的turned不平行。如果这样的话，整个句子便犯了我们最初讲述的“主次不分”的错误(第一题)。its wings beating quietly and its ultra-sensitive ears turned to the faint sounds 由代词带起，综合了名词+ing(施动), 与名词+ed(受动) ，表示伴随状态，构成两个独立主格，而主句主语是a gray owl,却缺少动词，因此选项为A (flying low)。
以上就是小编为大家带来的SAT语法难点 独立主格结构经典例句的相关内容，希望对大家的备考有所帮助，更多精彩内容敬请关注