SAT高分必读：Boundary考前急救攻略!

2025年6月7日的SAT考试即将到来，在语法部分，Boundary考点极易出错，所以今天，澜大北美SAT名师将通过3道形似的易错题来加深对该知识点的理解。

 

 

一、Part 1

 

1. 模型1

 

SVO1. SVO2; though, SVO3. (SVO3 与 SVO2 转折)

SVO1. SVO2, though; SVO3.(SVO2 与 SVO1 转折)

 

(该模型本质考察精准区分“分句与分句之间的逻辑关系”)

 

2.例题(选自DSAT2024-5月真题)

 

Most sand is beige because of deposits of gray-and tan-hued minerals, such as quartz and feldspar. The sand at Komodo Island Beach in Indonesia is a more unusual ______ deposits of crushed coral and other organic matter lend the sand a unique pink hue.

 

Which choice completes the text so that it conforms to the conventions of Standard English?

 

(A) shade, though;

(B) shade, though,

(C) shade; though

(D) shade, though

 

3.解析：

 

首先，判定横线前 "The sand……shade”是独立分句(其中主语是the sand、谓语动词是is)，横线后“deposits……hue”也是独立分句(其中主语是deposits、谓语动词是lend)，因此排除B项;

 

其次，两个独立分句间关系为同向(即：后面unique pink hue在进一步解释前面 unusual shade)，所以答案只能选A，用分号断开2个独立分句。

 

二、Part 2

 

1.模型2

 

SVO1: though SVO2，SVO3

 

(该模型本质考察3个独立分句需要2种链接方式)

 

2.例题(选自DSAT2025-3月真题)

 

On most of the world's beaches, sand is a predictable cream or beige color. The sand at Cavendish Beach in Canada is a strikingly different _______ sand gets its shade from deposits of gray- and tan-hued quartz and feldspar, deposits of iron oxide and other organic matter lend the sand at Cavendish Beach a colorful red tint.

 

Which choice completes the text so that it conforms to the conventions of standard English?

 

(A) shade, though most

(B) shade: though most

(C) shade, though, most

(D) shade, though. Most

 

3.解析：

 

首先，判定横线前“The sand……shade”是独立分句1(其中主语是the sand、谓语动词是is)，横线后“most sand……feldspar”是独立分句2(其中主语是most sand、谓语动词是gets)，横线后“deposits……red tint”是独立分句3(其中主语是deposits、谓语动词是lend);

 

因此，答案选B，需要though(此处做连词)，链接独立分句2和3，还需要冒号与前方的独立分句1链接。

 

三、Part 3

 

1. 模型3

 

SVO，though，不完整句

 

(该模型本质考察1个句子内部，作插入语时，需使用成对的逗号/破折号/括号)

 

2.例题(选自DSAT2025-3月真题)

 

With an installed capacity of 35 megawatts, the Platanare geothermal power plant in Honduras offers a dependable source of renewable energy. Power plants like Platanare supply only a small fraction of Honduras's _____ the scarcity of sites with the necessary combination of high-temperature geothermal reservoirs and fractured rock limiting the widespread development of such systems.

 

Which choice completes the text so that it conforms to the conventions of Standard English?

 

(A) electricity; though,

(B) electricity, though;

(C) electricity, though

(D) electricity, though,

 

3.解析：

 

首先，判定横线前“Power plants……electricity”是独立分句(其中主语是power plants、谓语动词是supply)，横线后“the scarcity……systems”是短语(*因为没有谓语动词存在)。

 

所以排除A/B/C项(原因：分号//逗号+连词though都需前后方均为独立分句)，选D。

 

以上就是老师全部分享的内容啦!同学们快趁着考前按照老师总结的方法练起来，强化对 Boundary 考点的掌握，争取在考试中轻松攻克这类易错题!