This lesson is on the modal verb "must" and how it is used as "must/mustn't + base verb" as well as the phrase "have to" to express strong obligation.
Must for Obligation (Part 1) is a free educational video by Smrt English.It helps students in grades HS practice the following standards L.9-10.1.
1. L.9-10.1 : Demonstrate command of the conventions of standard English grammar and usage when writing or speaking.
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