Question

This box is too heavy to lift. ( complex sentence )

Answer 1

The complex sentence of the simple sentence. “This box is too heavy to lift”, is given below:  

The box cannot be lifted because it is too heavy.

Explanation:

This is a complex sentence because we have adjoined two sentences here:

• The box cannot be lifted.
• It is too heavy.

For making complex sentences, we use conjunction to joining two sentences.  

To join these sentences, we have used the conjunction “because”.

All of these factors formed the required complex sentence of the given simple sentence.

Answer 2

Complex sentence:

Because of the heaviness of the box, it cannot be lifted.

Explanation:

• The complex sentence is combination of many sentences which is used to add depth to the writing.
• It majorly comprises dependent clause which is a incomplete sentence though it has verb and subject; and independent clause which is a complete sentence or thought.
• In the given sentence, "Because of the heaviness of the box" is independent clause whereas "it cannot be lifted" is dependent clause.