Let's solve this worksheet step by step. The task is to combine the given
prefix (either *un-* or *re-*) with the
base word to form a new word, and then use that word in the sentence.
---
1. un + plug
-
unplug = to remove a plug from an electrical outlet.
- Sentence: *"Please ________ the lamp now."*
-
✔ Answer: unplug
>
Explanation: "Un-" means "not" or "reverse," so "unplug" means to disconnect something from power.
---
2. re + built
-
rebuilt = to build again (past tense of "rebuild").
- Sentence: *"We ________ our sand castle after the wave knocked it down."*
-
✔ Answer: rebuilt
>
Explanation: "Re-" means "again," so "rebuilt" means to build something once more.
---
3. un + happy
-
unhappy = not happy.
- Sentence: *"I am ________ because it is raining."*
-
✔ Answer: unhappy
>
Explanation: "Un-" negates the meaning of "happy," so "unhappy" means sad or not happy.
---
4. re + heat
-
reheat = to heat again.
- Sentence: *"We can ________ the pizza for lunch tomorrow."*
-
✔ Answer: reheat
>
Explanation: "Re-" means "again," so "reheat" means to warm up food that was already cooked.
---
5. un + load
-
unload = to take things out of a container or machine.
- Sentence: *"Please ________ the dishwasher."*
-
✔ Answer: unload
>
Explanation: "Un-" reverses the action — "load" means to put things in; "unload" means to take them out.
---
6. re + open
-
reopen = to open again.
- Sentence: *"The store will ________ in the morning."*
-
✔ Answer: reopen
>
Explanation: "Re-" means "again," so "reopen" means to open the store after it was closed.
---
✔ Final Answers:
1.
unplug
2.
rebuilt
3.
unhappy
4.
reheat
5.
unload
6.
reopen
These words are formed by combining prefixes (*un-* or *re-*) with base words, changing their meaning accordingly. The pictures help visualize the actions — like unplugging a lamp, rebuilding a sandcastle, etc.
Parent Tip: Review the logic above to help your child master the concept of prefixes re and un worksheet.
