We use 'this' to talk about something close to us or just mentioned. It helps show which exact thing we mean.
This book is very good.
I like this song a lot.
'This' can replace a noun to avoid repeating it. It means the thing we just talked about or will talk about.
This is my favorite place.
This is very interesting to me.
'This' can show attention to an idea or statement. It highlights something important in talking or writing.
This is what I mean.
I need to tell you this now.
'This' can mean the present time or situation. It shows what is happening now or being discussed.
This is a big moment.
We need to live in this.
'This!' can be said alone or at the start of a sentence to show strong feelings like surprise or excitement.
This! I can't believe it!
This is amazing!
'This' can refer to situations or facts known by the speaker and listener. It connects speech to shared knowledge or present experience.
You know this, right?
This happens all the time.
When pointing to something specific close by, 'this' identifies which item a speaker talks about or offers.
Look at this flower here.
Take this pen, please.
In math or logic, 'this' refers to a particular variable or item being discussed or calculated.
For this x, the value is 5.
This element satisfies the condition.