"WAS/WERE GOING TO"

 It is a way of telling a plan for the future that you had in the past. 

THE GRAMMAR IS: 

• Affirmative: subject + Was/were + going to + infinitive
• Negative: subject + was/were + not+ going to + infinitive
• Interrogative: Was/were + subject + goint to + infinitive 

EXERCISES

 A: He _was going to come, but he didn`t because he was busy_ 

 B: I wasn`t going to work because i am sick

C: Were they going to call last night?

D: She were going to call, but she forgot

PRACTICE: 

And now a video which explain better this topic: