Question

【題目】Amy ________ maths in our school since three years ago.

A. taughtB. teachesC. had taughtD. has taught

Answer 1

【答案】D

【解析】

句意：艾米從三年前就在我們學(xué)校教數(shù)學(xué)了。

考查時(shí)態(tài)。teach“教學(xué)”，taught過去式；teaches一般現(xiàn)在時(shí)，第三人稱單數(shù)形式；had taught過去完成時(shí)；has taught現(xiàn)在完成時(shí)。根據(jù)since three years ago可知是過去對(duì)現(xiàn)在的影響，用現(xiàn)在完成時(shí)。故選D。