(五)现在完成时
现在完成时表示从过去某一时刻开始一直延续到现在的动作或状态,或还要延续下去,句中常用since, for, yet, already等表示一段时间的状语。
例如:
1) Great changes have taken place in China since 1980.
2) He has been in this factory for five years.
(四)现在进行时
现在进行时表示现在时刻正在进行的动作或表示现阶段正在做的事情,句中常与now, at this moment等时间状语连用。
例如:
1) The boy is playing video games.
2) His father is writing a novel these days.
(三)一般将来时
英语动词表示将来时间有多种形式,其共同特点是句中常有表示将来时间的状语,如:tomorrow, next week, in a week等
例如:
1) We will visit the science museum next week.
2) We are going to discuss the problem tomorrow.
(二) 一般过去时
一般过去时主要用于表示过去的动作、行为或状态,句中常有yesterday, ago, in 1989, once, last week (month, year), at that time, just now 等时间状语。
例如:
1) He was born in 1989.
2) I used to play football when I was young.
英语的动词在表示不同时间里发生的行为或存在的状态时,要用不同的形式来表示。英语的时态从时间上来看,可分为“现在”,“过去”,“将来“和”过去将来“四大类。动词共有十六种不同时态,但常用的时态有八种。
(一) 一般现在时
一般现在时表示经常发生的动作(习惯性的动作)或存在的状态,句中常用always, usually, often, sometimes, seldom, never, every day等时间状语。
例如:
1) He goes to school at seven o’clock every day.
2) The sun rises in the east.
50. It was estimated that the thieves had stolen ______worth of jewelry from the biggest department shop in the city .
A. one-million–dollar B. one million dollar’s
C. one million dollars’ D. one million dollars
one-million dollar
49.______ came that some teachers would attend our class.
A. Word B. A word C. Words D. The Word
48.This is my ______ book.
A. brother John B. brother’s John C. brother’s John’s D. brother John’s
47. Some teachers in our school decided to donate______ of money to set up ______ to aid students from poor families.
A. sum …fund B. a sum …fund C. sum…a fund D. a sum …a fund
46. My maths teacher has______, and he has to follow______.
A. a stomach trouble…a strict diet B. stomach trouble…a strict diet
C. stomach troubles… strict diet D. stomach’s trouble… strict diets
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