when while as 练习题

when while as 练习题
When, While, As 练习题
When it comes to learning English grammar, understanding and correctly using different tenses is crucial. In particular, the correct usage of "when," "while," and "as" can sometimes be confusing for English language learners. In this article, we will explore the usage of these three words and provide practice exercises to help solidify your understanding. Let's dive in!
1. When:
"When" is typically used to refer to a specific point or period in time. It can introduce a subordinate clause or be used as a conjunction. Here are some common situations when "when" is used:
a) Talking about an action that happened in the past:
- I was studying in the library when my friend called me.
- When I visited Paris, I fell in love with the city.
b) Describing habitual actions in the past:
- When I was younger, I used to play soccer every weekend.
c) Referring to a future event:
- I will go to the cinema when the movie starts.
- We can have dinner together when you finish work.
2. While:
"While" is typically used to indicate a simultaneous action or event. It can introduce a subordinate clause or be used as a conjunction. Here are some common situations when "while" is used:
a) Describing actions happening at the same time:
- While I was cooking dinner, my roommate was watching TV.
- She listened to music while jogging in the park.
b) Indicating contrast or a difference in actions:
- While some people enjoy spicy food, others prefer mild flavors.
- He works hard, while his brother prefers to relax.
c) Referring to a future event that interrupts an ongoing action:
- I will call you while I am on my way to the airport.
3. As:
"As" is typically used to indicate a cause or reason, and it can also introduce a subordinate clause or be used as a conjunction. Here are some common situations when "as" is used:
a) Explaining the reason for a specific action:
- As it was raining heavily, we decided to stay indoors.
- He wore a coat as it was cold outside.
b) Indicating a similarity or comparison:
- She sings as beautifully as a professional singer.
- He can play the guitar as skillfully as his teacher.
c) Introducing a subordinate clause:
- As I was leaving, I saw him arriving.
Practice Exercises:
Now, let's put your knowledge into practice with the following exercises. Fill in the blanks with the appropriate word (when, while, or as).
1. _______ I was walking to school, I saw a rainbow in the sky.
2. John likes to listen to music _______ he is studying.
3. _______ I was studying for my exam, my cat kept jumping on the table.
4. She applied for the job _______ she wanted a challenging career.
5. _______ I was waiting for the bus, it started to rain.
Answers:
1. While
2. While
3. As
4. As
5. When
Conclusion:
Understanding the correct usage of "when," "while," and "as" is essential for effectively communicating in English. By practicing various examples and exercises, you can improve your grasp of these words and confidently use them in your writing and speaking. Keep practicing and expanding your knowledge of English grammar, and soon you'll master these concepts. Happy learning!。