Why?
“Let’s”
This is the second “specific” topic chapter in a row. Learning how to say “Let’s” is pretty important, but it’s also pretty specific and easy to learn. The goal will be for you to learn something new (in this case “let’s) while giving you an opportunity to review. This particular grammar point is really good for review because it works with a lot of other grammar you’ve already learned, meaning you get to practice a lot of other things while practicing what you’ve just learned! Let’s go for it.