SAT文法知識(shí)點(diǎn)第4期

一、動(dòng)詞

時(shí)態(tài)一致

1. 含義：

前后句的時(shí)態(tài)要保持一致。

例如：People are queuing for the test right now so the organizer is asking everyone to wear masks.

2. 用法：

(2) 過去時(shí)

(2) 過去時(shí)

a) 一般過去時(shí)

i. 定義：過去發(fā)生的動(dòng)作或狀態(tài)；過去習(xí)慣性、經(jīng)常性的動(dòng)作、行為。

ii. 標(biāo)志詞：once/in 1980/yesterday/last week/two years ago…

iii. 動(dòng)詞形式：did/ was / were

iv. 例句：

1. I didn't realize you were exhausted.

2. When I was a child, I often played football in the street.

b) 過去進(jìn)行時(shí)

i. 定義：過去某個(gè)時(shí)間正在發(fā)生或進(jìn)行的行為或動(dòng)作。

ii. 動(dòng)詞形式：was/were doing

iii. 例句：

1. At that time she was working in a department store.

2. Students were doing the covid test this morning.

c) 過去完成時(shí)

i. 定義：“過去的過去”：即以過去某個(gè)時(shí)間為標(biāo)準(zhǔn)，在此以前發(fā)生的動(dòng)作或行為，或在過去某動(dòng)作之前完成的行為。

ii. 動(dòng)詞形式：did/was/were + had done

iii. 例句：

1. As soon as we got to the station, the train had left.

d) 過去將來時(shí)

i. 定義：立足于過去某一時(shí)刻，從過去看將來;通常出現(xiàn)在賓語從句中。

ii. 標(biāo)志詞：did/was/were + would do

iii. 例句：

1. He said he would go to Chicago tomorrow morning.

2. Mary’s background in physics and chemistry provided her with a unique skillset that would serve her well for the rest of her career.

真題檢測(cè)

真題檢測(cè) 1

(2022-03NA-Q26) As a study by psychologists at the University of Exeter in the United Kingdom have suggested, employees may experience increased productivity and satisfaction when they are allowed to determine the number and arrangement of items on their desks or in their offices.

A. NO CHANGE

B. are suggesting, 

C. suggests,

D. suggest,

解析：通過employees may experience increased productivity看出may experience是一般現(xiàn)在時(shí)，根據(jù)前后句的時(shí)態(tài)要保持一致的原則，后面的句子也要是一般現(xiàn)在時(shí)，所以排除A/B/D三個(gè)選項(xiàng)，所以選C。

注：2022-03NA-Q26為2022年3月北美真題第26題。

真題檢測(cè) 2

(2021-10AS-Q3) A team of biopsychologists in Germany observed this effect in a series of experiments in which subjects don special glasses to control the field of vision and were asked to focus on a symbol in a computer monitor.

A. NO CHANGE

B. donned 

C. will don

D. will have donned

解析：通過observed this effect或were asked看出是一般過去時(shí)，根據(jù)前后句的時(shí)態(tài)要保持一致的原則，后面的句子也要是一般過去時(shí)，所以排除A/C/D三個(gè)選項(xiàng)，所以選B。

注：2021-10AS-Q3為2021年10月亞太真題第3題。

真題檢測(cè) 3

(2021-08AS-Q12) In 1975 screenwriter and filmmaker Julie Dash began taking notes on the stories she has heard from her family members who were part of the Gullah community.

A. NO CHANGE

B. hears

C. heard

D. will hear

解析：通過began taking 看出為一般過去時(shí)，根據(jù)前后句的時(shí)態(tài)要保持一致的原則，后面的句子也要保持一般過去時(shí)，所以排除A/C/D三個(gè)選項(xiàng)，所以選B。

注：2021-08AS-Q10為2021年8月亞太真題10題。

真題檢測(cè) 4

(2021-08AS-Q24) Some museum stakeholders could be interested in building a museum that would highlight inspiring and uplifting images of African American achievement. Other envisioned a museum that reckoned more directly with the suffering caused by slavery and segregation.

A. NO CHANGE

B. were

C. are

D. will be

解析：通過下句envisioned看出為一般過去時(shí)，根據(jù)前后句的時(shí)態(tài)要保持一致的原則，前面的句子也要保持一般過去時(shí)，所以排除A/C/D三個(gè)選項(xiàng)，所以選B。

注：2021-08AS-Q24為2021年8月亞太真題24題。