Unit 1: Complete and Incomplete Sentences
Unit 2: Types of Sentences
Unit 3: Simple and Complete Subjects and Predicates
Unit 4: Common Nouns
Unit 5: Common and Proper Nouns
Unit 6: Plural Nouns
Unit 7: More Plural Nouns
Unit 8: Singular Possessive Nouns
Unit 9: Plural Possessive Nouns
Unit 10: Subject and Object Pronouns
Unit 11: Complete Sentences and End Punctuation Review
Unit 12: Common and Proper Nouns Review
Unit 13: Singular and Plural Nouns Review
Unit 14: Possessive Nouns Review
Unit 15: Subject and Object Pronouns Review
Unit 16: Action Verbs
Unit 17: Linking Verbs
Unit 18: Helping Verbs
Unit 19: Past, Present, and Future Tense Verbs
Unit 20: Perfect Tense Verbs
Unit 21: Irregular Verbs
Unit 22: Progressive Verbs
Unit 23: Transitive Verbs
Unit 24: Intransitive Verbs
Unit 25: Subject and Verb Agreement
Unit 26: Action Verbs Review
Unit 27: Linking and Helping Verbs Review
Unit 28: Verb Tenses Review
Unit 29: Verb Forms Review
Unit 30: Subject and Verb Agreement Review
Unit 31: Adjectives
Unit 32: Comparative and Superlative Adjectives
Unit 33: Irregular Comparative and Superlative Adjectives
Unit 34: Adverbs
Unit 35: More Adverbs
Unit 36: Adverbs without -ly
Unit 37: Synonyms
Unit 38: Antonyms
Unit 39: Homophones
Unit 40: Adjectives Review
Unit 41: Comparative and Superlative Adjectives Review
Unit 42: Adverbs Review
Unit 43: Synonyms and Antonyms Review
Unit 44: Homophones Review
Unit 45: Conjunctions
Unit 46: Compound Subjects
Unit 47: Compound Predicates
Unit 48: Prepositions and Prepositional Phrases
Unit 49: Dependent Clauses
Unit 50: Independent Clauses
Unit 51: Commas
Unit 52: Compound Sentences
Unit 53: Complex Sentences
Unit 54: Compound-Complex Sentences
Unit 55: Conjunctions Review
Unit 56: Compound Subjects and Compound Predicates Review
Unit 57: Prepositions and Prepositional Phrases Review
Unit 58: Dependent and Independent Clauses Review
Unit 59: Compound, Complex, and Compound-Complex Sentences Review
Unit 60: Appositives
Unit 61: More Uses for Commas
Unit 62: Quotation Marks
Unit 63: Contractions
Unit 64: Abbreviations
Unit 65: Semicolons
Unit 66: Colons
Unit 67: Word Usage: Sit or Set
Unit 68: Word Usage: Lie or Lay
Unit 69: Word Usage: Your or You’re
Unit 70: Appositives Review
Unit 71: Commas and Quotations Review
Unit 72: Contractions and Abbreviations Review
Unit 73: Colons and Semicolons Review
Unit 74: Word Usage Review
Unit 75: Interjections
Unit 76: Articles
Unit 77: Prefixes
Unit 78: Suffixes
Unit 79: More Prefixes
Unit 80: More Suffixes
Unit 81: Greek Root Words
Unit 82: Latin Root Words
Unit 83: Spelling Patterns and Exceptions
Unit 84: More Spelling Patterns and Exceptions
Unit 85: Negatives
Unit 86: Interjections and Articles Review
Unit 88: Suffixes Review
Unit 89: Greek and Latin Root Words Review
Unit 91: Negatives Review
Unit 92: Review of the Eight Parts of Speech
Unit 93: Applying Punctuation Knowledge
Unit 94: Applying Punctuation and Word Usage Knowledge
Unit 96: Adjectives, Adverbs, and Verb Tenses Review
Unit 97: Sentence Structure Review: Simple and Compound Sentences
Unit 98: Dependent Clauses and Sentence Structure
Unit 20: Perfect Tense Verbs
Can-do objective: I can use the present perfect tense to describe past experiences and finished actions.
1. Target Vocabulary
| Word / POS | Definition | Translation | Contextual Example |
|---|---|---|---|
| travel (verb) |
to go from one place to another | đi du lịch | I want to travel to many different countries. |
| arrive (verb) |
to reach a place at the end of a journey | đến nơi | They will arrive at the train station at 5 PM. |
| explore (verb) |
to search and discover things about a place | khám phá | We love to explore new cities on foot. |
| receive (verb) |
to get or be given something | nhận | I have received a beautiful gift from my best friend. |
| prepare (verb) |
to make something or yourself ready | chuẩn bị | Mom helped me prepare for the big school play. |
| decide (verb) |
to make a choice after thinking about it | quyết định | I have decided to join the school music club. |
| already (adverb) |
before now or by this time | đã… rồi | He has already finished his science project. |
| yet (adverb) |
until now, used in negative sentences and questions | chưa | The school bus has not arrived yet. |
2. Grammar Focus
Grammar Point 1: Present Perfect Tense
Used for actions that happened at an unspecified time in the past or actions that continue to the present. The exact time is not important; the focus is on the experience or the result.
Key Examples:
- I have visited the zoo many times.
- She has lost her house keys.
- They have lived in this city for ten years.
Grammar Point 2: Present Perfect with Already and Yet
Use ‘already’ for actions that happened sooner than expected (usually in affirmative sentences). Use ‘yet’ for actions you expect to happen soon (strictly in negative sentences and questions).
Key Examples:
- We have already seen this new movie.
- My brother has not cleaned his room yet.
- Have you done your homework yet?
3. Practice Exercises
Match the target words on the left (1-6) with their correct English definitions on the right (A-F).
? Click to see Answer Key & Explanation (Đáp án & Giải thích)
Complete the sentences with the correct Present Perfect form of the verbs in brackets.
- 1. We (travel) to three different continents so far.
- 2. The train (arrive) at the platform already.
- 3. I (explore) the entire old town by myself.
- 4. She (receive) a confirmation email from the school.
- 5. They (prepare) everything for the camping trip.
- 6. Min (decide) to study Spanish next semester.
? Click to see Answer Key & Explanation (Đáp án & Giải thích)
-
1. They have ________ explored the old temple ruins.
-
2. My friends haven’t arrived at the theater ________.
-
3. Have you ________ decided on your vacation spot?
-
4. I have ________ received three packages today.
-
5. The students haven’t prepared their final presentation ________.
-
6. Has the plane landed ________?
? Click to see Answer Key & Explanation (Đáp án & Giải thích)
Read the statements based on correct grammar usage. Mark T (True) or F (False).
- 1. _____ I have already to travel to Europe twice.
- 2. _____ She has not decided her major yet.
- 3. _____ They have arrive safely at the resort yesterday.
- 4. _____ Have you received my postcard yet?
- 5. _____ Tom already has prepared the lunch box for tomorrow.
- 6. _____ We haven’t explored the city museum yet.
? Click to see Answer Key & Explanation (Đáp án & Giải thích)
Rearrange the words to form structurally correct Present Perfect sentences.
-
1. already / letters / they / received / have / the / .
➔ ____________________________________________________________________ -
2. yet / arrived / package / has / not / the / .
➔ ____________________________________________________________________ -
3. explored / we / new / local / routes / have / .
➔ ____________________________________________________________________ -
4. dynamic / decided / she / a / path / has / .
➔ ____________________________________________________________________ -
5. dinner / prepared / already / parents / my / have / .
➔ ____________________________________________________________________ -
6. assignment / you / finished / have / your / yet / ?
➔ ____________________________________________________________________
? Click to see Answer Key & Explanation (Đáp án & Giải thích)
Underline or circle the correct structural element to fulfill the perfect tense context.
- 1. Jessica has (traveling / traveled) to Japan several times.
- 2. We (have / has) already explored this beautiful island.
- 3. Have they (receive / received) the good news from home?
- 4. Lucas has not (prepare / prepared) his speech yet.
- 5. I have already (decide / decided) to buy a new laptop.
- 6. The guests have (arrive / arrived) at the front lobby.