Do you know what the [ VERB ] +[ VERB( ING) ] pattern is?
A lot of us learned that we add ing to a verb to describes something happening at a specific moment. Well, that's not exactly wrong.
In English, when you have a verb after certain verbs (you'll have to memorize them!) you have to add ing to the second one. For example the verb 'avoid'.
If I am on a diet, I can say: I avoid sugar. (sugar is not a verb)
But I HAVE to say: I avoid eatING sugar (because eat is a verb)
This way of using ING form is peculiar to English. As a matter of fact, no other European language has this type of rule, so if you are a speaker of any of them, you might find this a bit odd.
Check out the examples: