Question

The calculation done by him was very hard (Change into complex sentence)
The child went home so that he could see his grandfather. (Change into a compound sentence)
work hard or you won't succeed. (Change into a complex sentence)

Answer 1

Answer:

1. The calculation which was done by him was very hard.

2. The child wanted to see his grandfather and so he went home.

3. If you don't work hard you won't succeed.

Explanation:

• Complex sentence contains only one main clause, one or more sub clause, and the clauses are joined by binders.
• Compound sentence contains more than one main clause, and they are linked with linkers.
• First one has been changed into complex sentence using adjective clause. The two unlike clauses have been joined by relative binder which. Thus we get two finite verbs and a binder there.
• Second one has been changed into compound sentence by putting linker between two clauses. The reason has been put first and then cause is linked with and so.
• Third one has been changed into complex by conditional adverbials. Or has been omitted and "if not" is put there.

Answer 2

$\huge\bf{Answers} :$

1) The calculation done by him was very hard (Change into complex sentence)

• The calculation which was done by him was very hard

2) The child went home so that he could see his grandfather. (Change into a compound sentence

• The child wanted to see his grandfather, so he went home.

3) work hard or you won't succeed. (Change into a complex sentence)

• If you don't work hard, you won't succeed.