Present Simple & Continuos Grammar and Uses

Present Tenses are used to talk about several different kinds of time:
1. Now, at this exact moment, 2. Around now, 3.General Time, at any time, not just arond now.

• Present Simple: 

http://coursenglish-una.wikispaces.com/Grammar-4

Uses: 

1.  General Time: 

We can use present simple to talk about actions and situations in `general time´, things which happen

at any time, or repeatedly, or all time.

Example: My parents live near London.

2. `Momentary´ actions:

We can also use it to talk about `momentary ´present actions, things which take a very short time to happen. This tense is often used in sport commentaries.

Example: She passes to Mary.

• Present Continuos:

http://4.bp.blogspot.com/-EWuygyV792I/Tq6b0iTk5NI/AAAAAAAAAAs/HdBFoZtaJcc/s400/presente_continuo.jpg

Uses: 

1. Around now:

 We use present continuos to talk about actions and situations that are going on  `around now' :

 before, during and after the moment of speaking.

 Example: We are all waiting for you!

2. Changes: 

 We also use the present continous to talk about developing and changing situations. 

 Example: The weather's getting warmer.