“If” is used frequently in casual speech and writing where some otherswould prefer “whether”: “I wonder if you would be willing to dress up asa giant turnip for the parade?” Revise to “I wonder whether. . . .” “If"can’t really be called an error, but when you are discussing twoalternative possibilities, “whether” sounds more polished. (The twopossibilities in this example are: 1) you would be willing or 2) youwouldn’t. In sentences using “whether” “or not” is often understood.)Don’t substitute the very different word “whither,” which means “where.”
Facebook
Twitter
Google +