What Do we Mean by Assumption?
Modals and assumption
There are words in English that are used to express assumptions. Here are the modals:
Using Will: Past, Present and Future
The modal verb 'will' is used to help us assume a fact. Your assumption might be true or not.
Normally, 'will' has a reference to the present or future tense, but sometimes it is followed by a perfect infinitive structure which makes it possible for 'will' to refer to the past tense.
I thought it
Using Should: Past, Present and Future
Although the modal verb 'should' is the past tense of the verb 'shall,' but when we are talking about assumptions it functions as a present or future verb unless there is a perfect infinitive structure after it.
Using Ought to: Past, Present and Future
As you know, all these verbs are modal verbs and as a result, they are negated by adding the term 'not' to them. In this case, we can indicate that we do not think something is true.
To talk about assumption you can use three verbs phrases as follows. Check out the table to consider them in different tenses.