180 Days of High-Frequency Words – Unit 24

Unit Goal

Can-do: I can read and use important high-frequency words in simple sentences.

In this unit, you will learn these words:

  • knew
  • ever
  • since
  • piece
  • told

Vocabulary

1. knew

Meaning: understood or had information before now

Base word: know

• I knew the answer.

• She knew my name.

2. ever

Meaning: at any time

• Have you ever seen snow?

• This is the best cake ever!

3. since

Meaning: from a time in the past until now

• I have lived here since 2020.

• We have been friends since school.

4. piece

Meaning: a part of something

• I ate a piece of pizza.

• The puzzle has one missing piece.

5. told

Meaning: said something to someone

Base word: tell

• Mom told me a story.

• He told the teacher the truth.

Grammar Focus

Past Tense Words

knew and told are past tense verbs.

We use them to talk about the past.

Present: I know the answer.

Past: I knew the answer.

Present: She tells stories.

Past: She told stories.

Using "since"

We use since with a starting time.

• I have lived here since May.

• He has played soccer since he was six.

Questions with "ever"

We often use ever in questions.

• Have you ever ridden a horse?

• Has she ever visited Japan?

Picture Example

Look at the picture and read the sentence.

Exercise Context

• The boy has a piece of pizza.

• His mother told him to eat slowly.

Worked Examples

Worked Example 1

Sentence: I ______ the answer yesterday.

Step 1: The sentence talks about the past.

Step 2: We need the past form of "know".

Answer: I knew the answer yesterday.

Worked Example 2

Sentence: Have you ______ eaten sushi?

Step 1: The sentence is a life experience question.

Step 2: We use "ever".

Answer: Have you ever eaten sushi?

Worked Example 3

Sentence: We have lived here ______ 2022.

Step 1: The sentence needs a starting time word.

Step 2: Use "since".

Answer: We have lived here since 2022.

🔑 Đáp án & Giải thích

Ví dụ 1: "knew" là dạng quá khứ của "know". Câu có "yesterday" nên dùng quá khứ.

Ví dụ 2: "ever" dùng trong câu hỏi về trải nghiệm.

Ví dụ 3: "since" dùng với mốc thời gian bắt đầu, ví dụ: since 2022.

Quick Review

  • knew = past of know
  • ever = at any time
  • since = from a past time until now
  • piece = a part of something
  • told = past of tell