In direct speech, we use the actual words of the speaker which are enclosed within the inverted commas placed at the beginning and at the end We use introductory verbs in direct speech to introduce the speaker's words.
Example: Sushil said,"We need more ideas for the geography project."
In indirect speech(reported speech), the listener receives the substance or meaning of the speaker's actual speech without necessarily hearing the speaker,s exact words. In this indirect speech no inverted commas are used.
Example: Sushil said that they needed more ideas for the geography project.