Phrases affirmatives et négatives

The objective of this video is to be able to distinguish affirmative sentences from negative sentences and to be able to transform one into the other. An affirmative sentence is a sentence that expresses an affirmation, that says 'yes'. A negative sentence is used to deny, refuse or prohibit something. It is constructed by adding the words 'do not' and 'not' before and after the verb. It can also be constructed by adding 'do...not', 'do...nothing', 'never', 'no...more', 'none', etc.