We be able to use simple future when we want to speak or tell about work that will be done in future.
a. We use will / shall when we decide to do something at the time of speaking. The use of shall with I or we to express future time in possible but uncommon in American English. Shall is used much more frequently in british than in American English.
b. Except will / shall we able to use “be going to” in expressing future time. In speech, going to is often pronounced “gonna”.
WILL VERSUS BE GOING TO
To express a PREDICTION: use either will or be going to
When the speaker is making prediction about something she / he thinks will be true or will accur in the future, either will or be going to is possible.
a. According to the weather report, it will be cloudy tomorrow.
b. Accrording to the weather report, it is going to be cloudy tomorrow.
NB : There is no different in meaning between (a) and (b).
To express a PRIOR PLAN : use only be going to.
When the speaker is expressing a prior plan (something the speaker intends to do in the future because in the past she / he made a plan or decision to do it), only be going to is used.
a. Why did you buy this paint?
b. I am going to paint my bad room tomorrow.
NB : Speaker (b) has made prior plan, last week she decided, to paint her badroom, she intends to paint it tomorrow.
To express WILLINGNESS : use only will
When the speaker is not making a prediction in doing some thing and she / he make plan when speaking so you be able to use only will to express this situation.
a. The phone’s ringing
b. I’ll get it
NB : - speaker (b) is saying “I am willing’s I am happy to get the phone. “He is not making a prediction. He has made no prior plan to answer the phone and uses will to show his willingness.
-Be going to is not appropriate in this situation.
The formula of simple future
( + ) S + Aux + V1 + O
( - ) S + Aux + Not + O
( ? ) Aux: S + O + Adv
Jack will finish his work tomorrow
Jack is going to finish his work tomorrow
Jack will not finish his work tomorrow
Jack is not going to finish his work tomorrow
Will jack finish his work tomorrow?
Is jack going to finish his work tomorrow?
( + ) S + Aux + Be + Adj
( - ) S + Aux + Not + Be + Adj
( ? ) Aux + S + Be + Adj
It will be cloudy tomorrow
It will not be cloudy tomorrow
Will it be cloudy tomorrow?
It is going to be cloudy tomorrow
It is not going to be cloudy tomorrow
Is it going to be cloudy tomorrow?
Time signal of simple future :
- This afternoon
- This evening
- Next Sunday
- 5 minutes again
- 3 days again