Question

i do not know his plan. (replace his plan with clause)

Answer 1

Original sentence -

I do not know his plan.

New sentence -

I do not know what his plan is

Explanation -

Here the word 'his plan' have been replaced by a verb clause 'what his plan is.'

A Clause is a small group of words with the Subject and predicate or with the verb which has its own meaning in the sentence.

Answer 2

Clauses are used to express feeling and thoughts and they are placed next in rank to the sentences.

They consist of predicate and subject.

In the question asked, “his plan” is replaced with “what his plan is”.

The new sentence thus formed is given below.

I do not know what his plan is.