大家都说汉语比较难理解，同样的一句话只要语气不同意思就不一样。其实作为语言，英语句子中的不同时态能体现出不同的语义，下面小编就给大家举例分析一下，同学们一定要细细体会，才不容易出错哦。我们先来看看小学英语的4种时态。
一般现在时
定义：
1.目前存在的状态
2.经常性、习惯性的动作
标志词：频度副词： 例：always, usually, often, sometimes, every day(week….)
谓语形式：系动词be ( am, is, are) 行为动词原形（主语为第三人称单数时V + s, 或 es）
疑问形式：
1、be 放主语前
2.主语前加do 或does (动词还原)
否定式：
1、be + not
2.动词前加 don’t 或doesn’t (动词还原)
提问谓语：What do /does + 主语+ do…?
如：She reads English every day. What does she do every day?
现在进行时
定义：表示目前正在发生的动作或存在的状态
标志词：
1.提示语：look! Listen!
2.At +时间点 3.前有祈使句
谓语形式：Be (am, is, are ) + V-ing
疑问形式 be 放主语前
否定式：be + not
提问谓语：What is / are +主语+ doing？
如：We’re listening now. What are you doing now?
一般将来时
定义：
1.表示佳话或打算做某事
2.将要发生的动作或存在的状态
标志词：
1.tomorrow, the next day, this afternoon, this evening
2.next week (month, year…)
3.in the year 2007
谓语形式：
1.be going to + V 原形
2.will + V 原形
3.go, come, leave 等用现在进行时表示将来
4.want 用现在时表将来
疑问形式：be 或will 放主语前
否定式：be 或 will 后加 not will not = won’t
提问谓语：
1.What is/ are +…going to do…?
2.What will + 主语+do…?
如：He will play basketball next week. What will he do next week?
一般过去式
定义：表示过去时间内发生的动作或存在的状态
标志词：
1.yesterday, last week/ year/ month 等
2.two years ago/ in 2005 / at that time
谓语形式：
1.动词be 的过去时（was, were）
2.行为动词的过去式
疑问形式：
1.was / were 放主语前
2.主语前加did (动词还原)
否定式：
1.was/ were + not
2.动词前加didn’t (动词还原)
提问谓语：What did + 主语+ do…?
如：Tom did his homework last night.
What did Tom do last night?
总结
一般过去时:He went to library.
现在进行时:He is going to library.
一般现在时:He goes to library.
一般将来时:He will go to library.
He is going to take the exams.
不同时态中的语义大对比！1现在一般时与现在完成时
1) I come from Shanghai(上海人）
I have come from Shanghai（从上海来）
2) You read very well. (强调能力）
You've read very well. （强调一次刚完成的动作）
3) I forget.(一时想不起来了）
I have forgotten.（仍没想起来，可能已回忆起来了）
4) The book is written in simple English. (表状态）
The book has been written in simple English.（表动态，已用英语写成）
5) Every time I see him, he's been reading. （两个动作不可能同时进行）
Every time I have seen him, he's been reading. (强调两个动作同时进行）
6) He is gone. (强调状态）
He has gone （强调动作和时间）
7) He won't come till the play begins. (演出开始时）
He won't come till the play has begun.（戏已开始）
8) After I leave school, I'll go to college. （两个动作紧密相接）
After I have left school, I'll go to college.（强调毕业后，两个动作可能有间隔）
9) It is a long time since I saw you last.
It's been a long time since I saw you last.
(这两句话一样，后一句是美国英语）
10) Where are you (在哪）
Where have you been(去了哪）
22. 现在一般时与现在进行时
1) He works hard.（强调始终如一）
He is working hard.（强调现在）
2) What do you do (干什么工作的）
What are you doing（在干什么）
3) Here comes the bus! (表高兴和欣慰）
The bus is coming.（汽车到来的情景）
4) I forget him name.
I'm forgetting his name.(差点把他的名字忘了）
5) You don't eat much. (强调胃口不大）
You're not eating much.（你怎么不吃呀）
6) The match starts at 7 o'clock. (比较固定，不宜改变）
The match is starting at 7 o'clock.（可以改变）
7) Tom always comes late.
Tom is always coming late.(表示不满，责备）
8)Tom goes to college now.
Tom is going to college now.(这两句区别不大，后者更生动）
9） I tell you.（我可以告诉你）
I'm telling you.(我告诉你吧，有感情色彩）
10) He always sleeps in the afternoon.
He is always sleeping in the afternoon.(后者意味着整个下午都睡掉了）
11) I expect you to phone me. ( 几乎等于命令）
I'm expecting you to phone me.（婉转）
12) What do you say
What are you saying(你说些什么呀，表说话人惊讶，不满）
12) I find that the book is too difficult for me.(强调结果）
I'm finding that the book is too difficult for me. (强调过程，逐渐感到）
13) Apples cost more these days.(强调事实)
Apples are costing more these days.(越来越贵)
14) He always thinks of others.
He's always thinking of others.(表示赞扬)
15) Whenever I see him, he argues with somebody.(强调两个动作有先后) Whenever I see him, he is arguing with somebody.(强调两个动作同时进行)
16) I hope you'll give us some advice.
I'm hoping you'll give us some advice.(表示语气婉转)
17) I must go. (我应该去)
I must be going.(我该走了)
18) We can discuss this while we eat.(说话是没用餐)
We can discuss this while we are eating.(进餐已开始)
33. 现在完成时与过去一般时
1) I've seen him this morning.(还在上午的时间里)
I saw him this morning.(时间已不在上午了)
2) Who's opened the window (窗户还在开着)
Who opened the window (与现在无关,窗户可能已关上)
3) Have you ever heard him sing (他可能不是爱唱歌)
Did you ever hear him sing(你曾听过他