In some cases, the present perfect tense can also describe actions or situations that developed in the past and that continued up until the moment of speaking. It implies that the action or situation will continue in the future. A time expression, such as those listed below, is used to give this meaning with verbs such as begin, expect hope, live, study, teach, wait, and work. In addition, this use of the present perfect these occurs frequently with verbs no normally used in the continuous tenses. The present perfect tense, and all perfect tenses need the verb to have as an auxiliary verb.