Teacher's Notes
Gap FillFirst Conditional
Activity Type
Gap Fill
Focus
Correct verb forms in first conditional sentences
Aim
Students complete first conditional sentences with the correct verb form in each clause.
Level
A2–B1
Time
10–15 minutes
Preparation
Print one worksheet per student.
Procedure
Review the first conditional structure on the board: If + present simple, will + infinitive.
Emphasise: we do NOT use "will" in the if-clause.
Students complete the sentences individually.
Pairs compare and discuss any differences.
Check answers as a class.
Extension: students write the endings for three incomplete if-clauses of their own.
Casa ESL — First Conditional — A2–B1
Gap Fill
Student Materials
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Complete each sentence with the correct form of the verb in brackets.Complete each sentence with the correct form of the verb in brackets.
If it ___ (snow), we ___ (build) a snowman.
If she ___ (not / come), we ___ (start) without her.
I ___ (lend) you my book if you ___ (promise) to return it.
If they ___ (arrive) early, they ___ (get) the best seats.
We ___ (miss) the film if we ___ (not / leave) now.
If he ___ (practise) every day, he ___ (improve) quickly.
She ___ (be) upset if you ___ (forget) her birthday.
If I ___ (have) time, I ___ (help) you with the project.
If the restaurant ___ (be) full, we ___ (order) takeaway.
They ___ (not / let) you in if you ___ (not / have) a ticket.
If you ___ (press) this button, the machine ___ (start).
If we ___ (run), we ___ (catch) the 5 o'clock train.
Answer Key — For Teacher Use
1. snows / will build · 2. doesn't come / will start · 3. will lend / promise · 4. arrive / will get · 5. will miss / don't leave · 6. practises / will improve · 7. will be / forget · 8. have / will help · 9. is / will order · 10. won't let / don't have · 11. press / will start · 12. run / will catch