To make these sentences negative, we need to add the word "not" after the auxiliary verb or the verb "be". Here is the step-by-step solution for each sentence:
1. I run very fast.
To make it negative, we add "do not" before the verb "run":
I do not run very fast.
2. He runs very fast too.
To make it negative, we add "does not" before the verb "run":
He does not run very fast too.
3. We often sleep in the garden.
To make it negative, we add "do not" before the verb "sleep":
We do not often sleep in the garden.
4. Sally opens the window in her room when it is hot.
To make it negative, we add "does not" before the verb "open":
Sally does not open the window in her room when it is hot.
5. Mr. Bay often goes to the cinema with his son.
To make it negative, we add "does not" before the verb "go":
Mr. Bay does not often go to the cinema with his son.
6. My Mammy swims very well.
To make it negative, we add "does not" before the verb "swim":
My Mammy does not swim very well.
7. We swim well too.
To make it negative, we add "do not" before the verb "swim":
We do not swim well too.
By adding "do not" or "does not" before the verbs, we form the negative form of the given sentences. It is important to remember that for the 3rd person singular subjects (he, she, it), we use "does not" instead of "do not". This is because the verb "do" changes to "does" in the 3rd person singular form.
I don't run very fast.
He doesn't run very fast too.
We don't often sleep in the garden.
Sally doesn't open the window in her room when it is hot.
Mr. Bay doesn't often go to the cinema with his son.
My Mammy doesn't swim very well.
We don't swim well too.