I'm Alice Bryant.

The words if and weather can be tricky for some English learners, that is because they are sometimes interchangeable if and whether our words that connect two or more sentences or clauses.

And sometimes both words can signal that there are two possibilities or choices for something.

Other times these words are not interchangeable.

Today I will give you a few examples of when you must use weather and cannot use if we use the word weather before infinitive verbs.

In American English, the infinitive means to plus verb.

Let's look at an example.

Listen for the infinitive verb after weather.

I am wondering whether to get a book or magazine the infinitive following.

Whether is to get notice that the two possibilities here are a book or a magazine.

Notice also that the speaker did not say I am wondering if to get a book or a magazine.

Next up are Prepa Szish ins.

We use the word weather after prepossessing ins.

In this next example, pay attention for the prepossessing in and the word weather, which comes after it.

Teachers are interested in whether schools will reopen soon.

Here, the Prepa Szish in in comes before whether the two possibilities are that the schools will reopen soon or they won't notice that the speaker did not say teachers are interested in if schools will reopen soon, and that's everyday grammar.