Langeek

Learn

Expressions

Grammar

Vocabulary

Pronunciation

Mobile App Premium Dictionary

Once vs. Since

conjunctions of time once since

'Once' and 'since' are conjunctions but they are used in different contexts. In this lesson, we will learn their similarities and differences.

"Once" vs. "Since" in the English grammar

What Is Their Main Difference?

The main difference between 'once' and 'since' is that 'once' expresses time while 'since' expresses time and cause and effect.

Similarities and Differences

Parts of Speech

'Once' and 'since' have the same parts of speech. They are conjunctions. Conjunctions have three types and 'once' and 'since' are classified as subordinating conjunctions.
'Once' and 'since' are subordinating conjunctions of time.

Take a look at the following examples:

I will call you once I get there.

It was his first public appearance since three years ago.

Talking about Time

'Once' and 'since' are used to express time.

'Once' is used to show that as soon as something happens, another action or event follows.

She got herself a Hotdog once she was out of the hospital.

She is a cool person once you get to know her.

'Since' expresses an action that happened at one point in the past and continued happening until now (the present).

It has been two years since I first met him.

It has been so long since I have driven a car.

Talking about Cause and Effect

We use 'since' can be used to replace and mean 'because.' It can express cause and effect. Have a look:

He chose to walk since his house was close.

They decided to cancel the trip plan since no one was coming.

Are They Interchangeable?

The answer is no. If we replace 'once' and 'since' with each other the meaning of the sentence completely changes.

Comments

You might also like

As If vs. Though

In order to add to your bookmarks, you must SIGN IN.

'As if' and 'though' are conjunctions. In this lesson, we will learn their uses, similarities, and differences.

As If vs. Like

In order to add to your bookmarks, you must SIGN IN.

'As if' and 'like' are used to talk about similarities. In this lesson, we will learn their similarities and differences.

As If vs. If

In order to add to your bookmarks, you must SIGN IN.

'As if' and 'if' are both conjunctions, but they are used in different contexts. In this lesson, we will learn their similarities and differences.

Once vs. After

In order to add to your bookmarks, you must SIGN IN.

'Once' and 'after' are conjunctions of time. In this lesson, we will discover their differences and similarities.

Once vs. One Time

In order to add to your bookmarks, you must SIGN IN.

'once' and 'one time' mean the same thing. In this lesson, we will compare them to find out when to use them.

Once vs. As Soon As

In order to add to your bookmarks, you must SIGN IN.

'Once' as a conjunction can be used interchangeably with 'as soon as.' In this lesson, we will learn more about them.

Download LanGeek app