现在进行时的结构
现在进行时由“am / is / are + 现在分词”构成。如:
I’m studying at Yu Cai Senior Middle school. 我在育才中学读书。
He is writing on the desk. 他再课桌上写字。
They are talking about their visiting the Great Wall. 他们在谈论游长城的事情。
【说明】动词现在分词的构成方法:
(1) 一般在动词后加-ing。如:say—saying, play—playing, think—thinking, study—studying, teach —teaching, blow—blowing, build—building.
(2) 动词若以-e结尾, 则去e再加-ing。如:love—loving, make—making, guide—guiding, date—dating.
(3) 在以单短元音的重读闭音节结尾,且末尾只有一个辅音字母的动词后,双写最后一个辅音字母,再加-ing。如:begin—beginning, regret—regretting, plan—planning, ban — banning.
(4) 在以ie结尾的动词后,改ie为y,再加-ing。如:lie—lying, die—dying, tie—tying.
(5) 在以-c[k] 结尾的动词后加-king。如:picnic—picnicking, panic—panicking.
现在进行时的应用
(1) 表示目前正在发生或进行的动作。如:
They are planting trees on the mountain. 他们在山上植树。
Mother is preparing supper in the kitchen. 母亲在厨房做晚饭。
(2) 有些非持续性动词的进行时可以表示动作即将进行或发生,或表示动作的重复。如:
He is joining the army. 他要参军了。
They are buying the house. 他们要买那座房子。
(3) 当现在进行时中有always, forever, constantly, continually修饰时,表示说话人的赞赏或厌烦的感情。如:
Why is the baby always crying? 为什么那个老是在哭。
They are always helping us. 他们总是帮助我们。
注意:表示状态、感觉、心理活动的静态动词,一般不使用语进行时态。