What's the difference between that and it?

I know the difference between these two words. When that is used as a relative pronoun, it refers to a person or thing, and at the same time acts as a sentence component in a clause. Occasionally, you can guide non-restrictive attributive clauses. It can be used as a antecedent to emphasize the subject, object, adverbial of time, adverbial of place, preposition, object or clause in sentence patterns, which generally refers to what has happened, rather than what has not happened or been mentioned. To sum up the meaning of the two words for everyone, first have a general understanding ~ ~

Next, let's look at other differences between it and it:

1. Availability is different

"That" is usually used to refer to things or people that have already been mentioned, while "it" is used to replace objects or situations that have been specified now or before.

Example:

-There's a cat on the roof. The cat looks sleepy. ?

There is a cat on the roof. The cat looks sleepy.

-It's cold today. It makes me want to stay inside. ?

It is very cold today. It makes me want to stay indoors.

Emphasize differences

"That" is often used to emphasize the description of the things or situations mentioned above, while "it" is often used to make a simple description.

Example:

I don't want the red shirt, I want the blue one. ?

I don't want a red shirt, I want a blue one.

-It's dark outside. ?

It's getting dark outside.

3. Different positions

"That" is usually used after prepositions, while "it" is usually used after pronouns.

Example:

-He talks to the woman sitting next to him. ?

He talked to the woman sitting next to him.

The cat is sitting on the windowsill. It looks very comfortable. ?

The cat is lying on the windowsill. It looks very comfortable

4. Different backgrounds

"that" usually needs to echo the things or people mentioned above, and "it" can be used to replace everything mentioned above.

Example:

I saw a great movie last night. That film was directed by martin scorsese. ?

I saw a great movie last night. That film was directed by martin scorsese.

I bought a new computer yesterday. It's very fast. ?

I bought a new computer yesterday. It's very fast.

5. The special usage is different

"That" can be used to refer to a specific time, place or situation, while "it" cannot.

Example:

-It was a very difficult time for our family. ?

It was a very difficult time for our family.

It is dangerous to drive in the snow. ?

It's dangerous to drive in snowy weather.

6. Adjectives are used differently

"That" can be used to refer to a specific thing or person. In this case, "that" can be used with adjectives, but "it" cannot.

Example:

-That book is very interesting. ?

That book is very interesting.

-She's a great writer. This is why her books are so popular. ?

She is an outstanding writer. This is why her books are so popular.