Would like some advice on Modal Verbs e.g.shall,thx teachers

Dear teachers,

The modal verb..shall has two meanings as in:

A) Shall becomes would when it refers to the future ( changing to reported speech)
E.g.
"I shall tell them everything" ( direct speech)
I decided I would tell them everthing. ( reported speech)

B) Shall becomes should when it is a suggestion ( when changing to reported speech)
Shall we tell the manager?" ( direct)
She suggested that they should tell the manager. ( reported)

***I am confused as in whether it only applies to the subject pronoun I and We.

Can I apply the above usage to other subject pronouns such as he, she or they? E.g. "He shall lose weight."

Please advise... thanks sooooo much, teachers

[Casiopea]

shall is used with 1st person pronouns 'I' and 'We':

I shall
You will
S/he will
It will

We shall
You will
They will

should is commonly replaced by 'would', especially in North American speech.

I should / would
You would
S/he would
It would

We should / would
You would
They would

All the best,

[henry]

For the further usage of 'should', have a look at

http://dictionary.cambridge.org/resu...rchword=should

:)