IELTS

Learn how to use "it" sentences. For example:

It's raining hard outside.

They will increase your range of language and make your speech sound a lot more natural. And of course you'll get higher marks. Don't worry about the grammar behind the structure -- it's really not important unless you are studying linguistics. It can be thought of as a pronoun or sometimes a dummy pronoun. But not always. When used for describing the weather, as in the above sentence, it isn't really a pronoun at all!

Linguistically, It is very complex, so stay away from that. Just learn the chunks. Most it sentences can be re-written:

It certainly was no idiot who planned this = The person who planned this was certainly no idiot

It was a tall man who kissed the bride = The tall man kissed the bride

It is difficult to reach you by phone = Reaching you by phone is difficult

It is crazy to believe the Earth is flat = Believing the Earth is flat is crazy

Most native English speakers intuitively know what it stands for. But for non-native speakers, understanding this will be more difficult.

Talking about the weather

It sentences are very useful when you want to talk about the weather.

It rains a lot in the spring

It's so cold outside today

It was snowing when we arrived. I was so excited.