Study those following situations carefully

1^st Situation

 Joseph is in his car. He's on his way to work , he is driving to work.

This means: he is driving now at the time of speaking , the action is not finished yet.

Am/is/are + ING is the present continuous tense

I am doing something = I'm in the middle of doing = I've started doing it but I haven't finished it yet.  The action is happening at the time of speaking

Example:

• 1) Please don't make so much noise, I'm studying.   You can't say (Please don't make so much noise, I study)

• 2) Let's go out now, it isn't raining any more.   You can't say (Let's go out now it doesn't rain any more)

• 3) I'm tired ,I'm going to bed ,good night.   You can't say (I'm tired, I go to bed good night)

• 4) Are you enjoying the party?   You can't say (Do you enjoy the party)

2^nd Situation

In this situation the action is not necessarily happening at the time of speaking.

Jane  and   Paola on the picture

In this situation Jane isn't reading the book at the time of speaking

It means that she has started to read a book but she hasn't finished it yet

Some more examples:

1) Catherine wants to work in France so she's learning French but perhaps she isn't learning French at the moment of speaking.

2)  Some friends of mine are building their own house. They hope it will be finished before next summer.

3^rd Situation

We use present continuous tense when we talk about things happening in a period around now. (To day /this week / this month)

Example:  You're working very hard today. (You work very hard today)

4^th Situation

We use the present continuous tense when we talk about changes happening around now

Example:

•1)      The population of the world is rising very fast.  (The population of the world rises very fast)

• 2) Is your English getting better?  (Does your English get better)

Now complete the sentences below with one of the following verbs in the correct form, you can use a verb more than once.

come    get    look  make   start  stay   try    work  happen