Using prepositions like a native speaker Prepositions are very tricky for ESL students like myself to use. Although even simple use of English prepositions can sometimes be tricky, it might not be a big problem because, in my case, I remember things (such as phrasal verbs) as a set phrase (come on, set up, or put something "into" a space, shift something "to/toward" a particular direction, etc). However, native speakers often use prepositions in a more complex way in real life conversations. It's a rule of thumb that it's always better to keep our conversation as simple as possible, but it's not always possible because everyone wants to speak just naturally, letting words come out of their mouth pretty spontaneously (especially in a casual setting). I'm terrible at giving an example of what I'm talking about that really represents the core point of my question, but the point I'd like to drive home is that when I listen to native speakers' "natural" English, there are many prepositions popping up just in one single sentence. ↓Again, I'm not talking about phrasal verbs. What I'm saying is about some additional prepositions that don't really need to be there in the sentence but are thrown into the sentence, so that their speech is more clear. (although I believe this is not intentional). This is very difficult for me to do, because, like I said, just remembering a combination of a verb and a preposition as a phrasal verb is just a piece of cake, but making my speech sound more clear and colorful by throwing extra prepositions in requires the real mastery of the basic definition of each preposition, like "can you scroll back a little bit?" "can you scroll up a little bit?" versus "can you scroll BACK UP a little bit?" If I say "scroll back," it means to go back where I was. if I say "scroll up," it basically has a connotation of going up. But if I say "scroll BACK UP," it's like the combination of "scroll back" and "scroll up," meaning that I want to go back where I was by going/scrolling up. As you can see, it's not grammatically wrong to say just "scroll back" and "scroll up" in this situation, and the sentence doesn't necessarily have to contain "back" and "up" at the same time in order to ask someone to go back on the screen. However, it's more clear to say "back" and "up" at the same time in this particular situation. Native speakers do this almost unconsciously, and this is one of the things that I really want to master in order to take my English to the next level. I understand that people might say "well, just read books and listen to TED," but I'd like to know a different medium or learning platform such as a web site for me to utilize. I'd like to know more possibilities that are readily available. Do you have any suggestions?