Vanessa reviews three English mistakes that learners at different levels commonly make. She reassures viewers that people will still understand them and asks them not to criticize themselves too harshly. The aim is not perfect English; it is to make speech more natural and accurate.
The first correction is the time expression “yesterday night.” Vanessa explains that the meaning is understandable, but natural English normally uses “last night” for the previous evening. This is presented as a quick, manageable correction rather than a serious communication failure.
The second point concerns countable nouns used in general statements. For countable items such as mountains and monkeys, she uses plural forms: “I like mountains” and “I’m a big fan of monkeys.” With uncountable nouns such as tea and air conditioning, the noun stays singular in a general statement: “I like tea.” She notes that there are exceptions, so this is a broad rule rather than an absolute rule for every noun and context.
The final correction distinguishes “since” and “for” when describing a continuing situation. “For three years” expresses duration, while “since 2015” identifies the starting point. Vanessa demonstrates both patterns with living in a city and learning English. Learners can apply the same contrast to work, study, or other activities that continue over time.
The lesson closes by reviewing the three examples and inviting viewers to say whether they make these mistakes. Its central message is supportive: understandable speech is already valuable, and small corrections—using “last night,” plural count nouns in general statements, and since/for with the right time reference—can help English sound more natural. Learners can practise by writing one example for each point and noticing which rule applies in everyday conversation.
Her examples also model how to respond to correction without losing confidence: first notice the intended meaning, then learn the more natural form and practise it in a sentence of your own. The grammar tips are general patterns, so learners should still pay attention to exceptions and the meaning they want to express.