Cách sử dụng
The expression "add on" is commonly used when referring to something extra that is added to an existing thing or system to improve or enhance it. For example, if you buy a computer, you might want to add on extra memory, a new graphics card, or a better keyboard to make it work better. Similarly, when you buy a car, you might want to add on features such as a GPS system, Bluetooth, or a sunroof. "Add on" can also refer to additional services that can be added to a basic package, such as a gym membership, travel insurance, or Wi-Fi access in a hotel room. When using this expression, it's important to make sure that the add on is compatible with the existing system or package and that it is worth the extra cost.