Reported Speech -- Statements

You want to tell somebody what a person said. There are two ways of doing it:

You can repeat the speaker's exact words --- direct speech:
         John said, "I want to buy a car"
Or you can tell another person what John said --- reported speech:
         John said  (that) he wanted to buy a car.

Therefore, you  need to learn how to transform direct speech into reported speech:

Pronouns:
In reported speech, you often have to change the pronoun depending on who says what.

       She said, "I am ill"
       She said she was ill.

Tenses:

Direct Speech	Reported Speech
Present Simple	Past Simple
Present Continuous	Past Continuous
Past Simple	Past Perfect
Present Perfect	Past Perfect
Future (will)	Conditional (would)
Can	Could
Must	Had to

Place and time expressions:

Direct Speech	Reported Speech
Now	Then
Today, tonight	That day, that night
Tomorrow	The next/following day
Next week/year	The following week/year
Yesterday	The previous day the day before
Last night	The previous night, the night before
A week ago	A week before
Here	there
This, these	That, those

Reporting verbs:

In reported statements, reporting verbs are usually say or tell. The meaning is the same but the grammar is different:

Say ----      John said he was at home 
Tell somebody --- John told me he was at home
Say to somebody --- John  said to me he was at home


Exercise 1

conditional

http://www.ego4u.com/en/cram-up/grammar/conditional-sentences/cat-and-mouse