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现在进行时：
1.构成：is / am / are + 现在分词
2.功能：
(1)表示现在正在进行的动作。
. The kettle is boiling. Shall I make tea?
. Don't you think you eat too much? You're putting on weight.
. The workers are building a new bridge across the river.
(2)表现阶段正进行的动作。
. He is taking physics this semester.
. We are preparing for our final examination this week.
(3)go, come, leave, arrive, land, meet, die, start, return, join, etc. 用于进行时态时表示即将开始的动作。
. Look! The bus is coming. 看!车来了!
. The old man is seriously ill, and he is dying.
. Alice is leaving for Beijing with her mother.
(4)与 always, forever, continually, constantly 等副词连用，表示说话人带有感情色彩：赞赏或厌恶。
. He is always thinking of others.(他总是想着别人。)
. The boy is continually making noises.(这男孩不断地发出吵闹声。)
. The teacher is constantly (always) criticizing her for being late.(老师一直在批评她迟到。)
(5)下面表示状态、感觉、情绪、精神活动的动词不可用于进行时。
(此条戒律请背 10遍!!!)
believe(相 信)，doubt(怀疑)，see(看见)，hear(听见) ，know(知道)，understand (理解)，belong(属于)，think(认为)，consider(认为)，feel(觉得)，look(看起来)， seem(看上去)，show(显示)，mind(介意)，have(有)，sound(听起来)，taste(尝起来)， require(要求)，possess(拥有)，care(关心)，like(喜欢)，hate(讨厌)，love(喜爱)， detest(憎恨)，desire(意欲)
【简单记忆】
● 永远不要说I'm believing...或He is seeing a house. 再简单一点说，这些动词后面不要随意加-ing.
● 可怕的是：我们在写作及口语中常犯此类大错!
● 注意：have a party / think about可以用进行时，因为这里have意为“举行”;think意为“考虑”。
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发表于 2016-7-11 22:29:21