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Class 4 English — Because and so

Join two ideas with because or so, and say which half is the cause.

Name: ________________________

  1. 1.Which sentence uses its joining word correctly?

    • a) He could not lift it so the bag was heavy.
    • b) The bag was heavy so it was full of books.
    • c) He could not lift it and the bag was heavy because.
    • d) The bag was heavy so he could not lift it.

  2. 2.We lit a candle ____ the power had gone.

    • a) because
    • b) but
    • c) or
    • d) so

  3. 3.Write "because" or "so": The plants died ____ nobody watered them.

  4. 4.In "The tiger stayed hidden because it had seen us", which half is the reason?

    • a) stayed hidden
    • b) The tiger stayed hidden
    • c) it had seen us
    • d) The tiger

  5. 5.Which word tells you the reason something happened?

    • a) while
    • b) so
    • c) but
    • d) because

  6. 6.Sort each sentence by the word that belongs in its gap.

    Groups: because · so

    • The tank was empty, ____ the pump would not start.
    • He missed the bus ____ his watch had stopped.
    • It began to rain, ____ we ran inside.
    • She wore a coat ____ the wind was cold.
    • The road was closed, ____ we took another route.
    • The kite would not fly ____ there was no wind.

  7. 7.The ice melted ____ we left it in the sun.

    • a) because
    • b) then
    • c) and
    • d) so

  8. 8.Sort each half by whether it is the cause or what happened as a result.

    Groups: The cause · The result

    • The glass broke on the floor
    • Someone left the tap running
    • The glass slipped from her hand
    • Rahul forgot his umbrella
    • Rahul reached school wet
    • The bathroom floor flooded

Answer key — Class 4 English — Because and so

  1. 1. d) The bag was heavy so he could not lift it.
  2. 2. a) because
  3. 3. because
  4. 4. c) it had seen us
  5. 5. d) because
  6. 6. The road was closed, ____ we took another route. → so; She wore a coat ____ the wind was cold. → because; The tank was empty, ____ the pump would not start. → so; He missed the bus ____ his watch had stopped. → because; The kite would not fly ____ there was no wind. → because; It began to rain, ____ we ran inside. → so
  7. 7. a) because
  8. 8. The glass slipped from her hand → The cause; The glass broke on the floor → The result; Rahul forgot his umbrella → The cause; Rahul reached school wet → The result; Someone left the tap running → The cause; The bathroom floor flooded → The result