Ôn tập tiếng Anh 11: Từ vựng, ngữ pháp và đọc hiểu

Review of English Vocabulary, Grammar, and Reading Comprehension for Grade 11

Welcome to this comprehensive course designed for high‑school students preparing for the English section of the Grade 11 exam. The lessons below cover the most frequently tested concepts: modern terminology, phrasal verbs, verb tenses, modal verbs, adverb usage, and noun‑verb distinctions. Each section includes clear explanations, examples, and tips for remembering the rules—perfect for both classroom revision and self‑study.

1. Digital Natives: Understanding Modern Terminology

The term digital native describes a generation that has grown up surrounded by digital technology. Unlike older generations who had to learn how to use computers, digital natives are immersed in technology from childhood.

• Key features: familiarity with smartphones, tablets, social media, and online learning platforms.
• Contrast with "digital immigrant": someone who adopted technology later in life.

Memory tip: Think of the word "native" as a person who is "born" into a digital environment.

2. Phrasal Verbs for Reducing Consumption

When you want to talk about decreasing the amount of something you consume, English uses the phrasal verb cut down on. The structure is:

cut down on + noun/gerund

Example:

• "I need to cut down on sugar to improve my health."

Other common collocations include cut down on smoking, cut down on expenses, and cut down on screen time. Remember that cut down on always requires the preposition on; without it, the meaning changes or becomes incorrect.

3. Present Perfect for Actions Extending to the Present

The present perfect tense (has/have + past participle) is used when an action started in the past and continues up to now, or when the exact time is not specified. In the sentence:

"Life expectancy has increased greatly over the past 200 years."

the phrase over the past 200 years signals a period that began in the past and is still relevant, making the present perfect the correct choice.

• Incorrect alternatives: "will stay" (future), "stayed" (simple past), "stays" (simple present).

Quick check: If you can replace the time phrase with "since 1820" and the sentence still sounds natural, you need the present perfect.

4. Modal Verbs: Mustn’t vs. Don’t Have to

Modal verbs express obligation, permission, or lack thereof. Two common sources of confusion are mustn’t (prohibition) and don’t have to (lack of necessity).

• Mustn’t: "You mustn’t wear shorts to school." – It is forbidden.
• Don’t have to: "You don’t have to wear a tie." – It is optional.

Remember the difference by linking must with "must do" (required) and mustn’t with "must not do" (prohibited). In contrast, have to indicates a requirement, so don’t have to removes that requirement.

5. Adverbs of Frequency: Using “Regularly” Correctly

Adverbs modify verbs, adjectives, or other adverbs. In the sentence:

"Stay healthy by eating well and exercising regularly."

the correct word is the adverb regularly, not the adjective regular or the noun regularity. The adverb tells us *how* the action is performed—here, it indicates a repeated, consistent habit.

• Examples of adverb usage: "She studies daily." "He runs quickly."

Tip: If the word can be placed directly before a verb and answers the question "how?", it is likely an adverb.

6. Past Simple vs. Present Perfect with Time Markers

When a specific past time is mentioned (e.g., "last weekend"), English requires the simple past:

"Last weekend, my parents picked wild mushrooms."

The present perfect (have/has + past participle) cannot be used with a completed time reference because it implies an unfinished period. Incorrect example: "Last weekend, my parents have picked wild mushrooms."

• Use simple past with words like "yesterday", "in 1999", "last year", "last weekend".
• Use present perfect with "already", "yet", "ever", "never", or unspecified time frames.

7. Expressing Lack of Necessity: “Don’t Have to”

To indicate that something is not required, use don’t have to:

"Young people don't have to go to university."

This sentence conveys that university attendance is optional, not prohibited. Contrast with mustn’t, which would mean "are not allowed to".

Practice sentence transformation:

• Original: "You must finish the assignment." → Optional: "You don't have to finish the assignment if you already understand the material."

8. Noun vs. Verb Forms: Advice vs. Advise

The word advice is a non‑countable noun meaning "guidance or recommendation". The verb form is advise. In the context of grandparents sharing wisdom, the correct phrase is:

"Grandparents can give young people valuable life advice."

Common mistakes:

• "life advise" – incorrect because advise is a verb, not a noun.
• "life adviser" – refers to a person who gives advice, not the advice itself.

Remember: Advice ends with a c, while advise ends with an e.

9. Consolidating the Concepts: Mini‑Quiz Review

Test your understanding with the following quick questions. Write the answer on paper, then check the explanations provided.

• Which term describes someone raised with digital technology? Answer: digital native
• How do you say you are reducing sugar intake? Answer: cut down on sugar
• Choose the correct verb form for a period that started in the past and continues today: "Life expectancy ___ over the past 200 years." Answer: has increased
• Which modal verb shows prohibition? Answer: mustn’t
• Pick the adverb that fits: "Exercise ___ to stay healthy." Answer: regularly
• Which tense is correct for an event that happened "last weekend"? Answer: simple past (picked)
• How do you express that university is optional for young people? Answer: don't have to
• What is the noun form for "guidance" that grandparents can share? Answer: life advice

10. Study Strategies for Exam Success

To retain these concepts, incorporate the following techniques into your study routine:

• Spaced repetition: Review each rule every 2‑3 days, then weekly, to move knowledge into long‑term memory.
• Active recall: Close your notes and write sentences using the target structure (e.g., "I mustn’t ...").
• Contextual learning: Read short articles or listen to podcasts that naturally contain the target vocabulary, then highlight the examples.
• Peer teaching: Explain a rule to a classmate; teaching reinforces your own understanding.

By mastering these eight key areas, you will improve both your vocabulary range and grammatical accuracy, giving you a solid edge in the English exam. Keep practicing, stay curious, and remember that consistent effort—just like a digital native’s comfort with technology—will lead to success.