In this video, we learn how to use "It's + adjective + infinitive" in English. To form these sentences, you will use the pattern that is stated above. This is very common in the English language, and you can put whatever you want into the sentence as the infinitive. You can change this from "it's hard to do" to It's not hard to do" to "it's easy to do". You can also make something negative, by giving it the prefix "im", which would change "possible" to "impossible". You can also ad in "un" to make a word negative ass well.