Peachy is right. This is a complex topic and it would be almost impossible to give a complete answer here. The good news is that there is a fabulous (great) website that provides 3 tutorials on the use og gerunds and infinitives, and provides 'Lists of Verbs followed by Gerunds and Lists of Verbs followed by Infinitives: http://www.englishpage.com/gerunds/index.htm Knowing how and when to use gerunds or infinitives can really only be learned by being exposed to the many verbs, gerunds and infinitives, i.e. reading and re-reading the topic. Here are my suggestions: 1 read everything in this tutorial 2 do the exercises 3 after completing the tutorials and exercises, wait a week, then read everything again and do the exercises again.

This is a great question and rather complicated because there isn't just one rule. The easiest answer is that some verbs take the infinitive, some take the gerund, some take both. Examples of verbs take the infinitive: I agreed to deliver the cake. I have to deliver the cake. I asked (him) to deliver the cake. Some verbs take the gerund. For example. I consider learning English useful. I detest going to the dentist. Some verbs take both: Lisa prefers to listen to Jazz music. = Lisa prefers listening to Jazz music. Tom likes to listen to Opera. = Tom likes listening to Opera. Some verbs take both but mean different things: I promise to clean the bathroom. vs. I promise cleaning the bathroom will be fun. I remembered to carry an umbrella with me and I have it with me. vs. I remember carrying an umbrella with me, but I can't find it. My suggestion to you is: Use the internet to look up lists of verbs that take the infinitive/gerund/or both. Then choose words you think you will be useful to you and practice using those words. It's also helpful if you have someone to speak in English with and you ask that person to always correct you on that point.

There's no simple trick; you must learn how they work in detail. This includes knowing which verbs they follow, as well as which one follows other parts of speech.

Thank you so much... I have to study a lot now....wow!