I Like to Cook or I Like Cooking?
"I spend time reading" or "I spend time to read"?
"She can swim" or "she can to swim"?
What's the difference between "remember to do" and "remember doing"?
Learn when to use the infinitive (with or without "to") and when to use the gerund (the -ing form) of a verb. This 20-page e-book contains eight lesson and eight exercises to help you master this difficult grammar topic. It is written for intermediate and upper intermediate learners of English but lower or higher levels could benefit from it too.