These modal verbs of deduction in the past are often confusing and difficult to remember, but with a little hard work and practice, you will learn how to use them correctly! Firstly, it’s important to remember what modal verbs are and why they are used. You can find out more about tha...
我们用情态动词来表述对现在的确定程度,同样,我们也能用它们对过去进行推测。 Have + past participle (‘have done’, ‘have been’ have stolen’ etc.) is called the perfect infinitive. When we use modal verbs to talk about the present they are followed by an infinitive without ‘to’. When w...