一般现在时用法说明
一.动词变化:一般现在时主要用动词原形表示,但第三人称单数后要加词尾-s,另外be和have有特殊的人称形式。
在加词尾-s时要注意:
情况 加法 例词
一般情况 加-s reads, writes, says
以ch, sh, s, x, 或o收尾的词 加-es teaches, washes, guesses, fixes, goes
以“辅音字母+y”结尾的词 变y为i再加-es try-tries
carry-carries
二.一般现在时表示:
(1)表示现在的状态, 例如:He's twelve.
(2)表示经常性的或习惯性的动作, 常与often, usually, sometimes, always, every day等表示经常性的或习惯性的时间状语连用.例如:I go to school every day.
(3)表示主语具备的性格和能力, 例如:She likes apple.
(4)表示客观、普遍的真理。Two and four makes six.
三 句型
肯定句结构:主语+be动词/行为动词+宾语/表语
(1) 行为动词:
a. 主语为第一、二人称、复数人称时(I, you, we, they, the boys),主语+动词原形+宾语。
They go to school every day.
b.主语为第三人称单数时(it, he,she, Lily),主语+动词s/es+宾语。
Lily often likes singing.
(2)系动词(be): 主语+系动词+表语。
I am… They/We/You are… He/She/It is…
2.否定句结构: 主语+be动词/行为动词+宾语/表语
(1) 行为动词:
a. 主语为第一、二人称,复数人称时,主语+don't+动词原形。
They don't go to school every day.
b.主语为第三人称单数时,主语+doesn't +动词原形。
Lily doesn't like singing.
(2)系动词(be): 主语+is/am/are后加not+表语
I am not a worker.
3. 一般疑问句结构:
(1)行为动词
主语为第一、二人称,复数人称时,Do+they/we/you+动词原形
Do they go to school every day? (Yes, they do. No, they don't.)
b.主语为第三人称单数时, Does +he/she/iIt+动词原形
Does Lily often like singing? (Yes, she does. No, she doesn't.)
(2) 系动词(be): is/am/are+主语+表语
Are you a worker? (Yes, I am. No, I'm not.)
4.特殊疑问句结构
特殊疑问词(what, how often, which, where,who)+一般疑问句?
(1)行为动词
What do they do every day?
How often does Peter go fishing?
(2) 系动词(be):
Who is the girl at that gate?