Several years ago, I heard that "if A, B" and "B, if A" have difference nuance from Radio English. but not sure I understood correctly and even if understood correctly I can't remember what's the diffrence.
For example, I've written 3 expressions. Which is correct? Are both correct? (if then, which is used commonly in English)
- "You get an error if you click this button" v.s "If you click this button, you gen an error"
- "You can download mp3 files if you subscribe" v.s "If you subscribe, You can download mp3 files"
- "I'll be there if you come" v.s "If you come, I'll be there"
Any help would be appreciated. Thanks in advance.