Student or Learner
I want to know if you will come.
I want to know when you will come.
Are they grammatical, please? Which one is better than the other, please?
Pope of the Dictionary.com Forum
I thought we cannot use if + will together. I would say: I want to know if you come.
Please, correct all my mistakes. I should know English perfectly and if you show me my mistakes I will achieve my dream a little bit faster. A lot of thanks.
Not a teacher nor a native speaker.
We can use "if" and "when" with "will" if they are part of a noun phrase as in "I want to know if you will come" and "I want to know when you will come." When "will come" is a verb phrase, it cannot be combined with "if" or "when." Thus it would be wrong to say "If (or when) you will come, you will learn a lot of things." As you know, we use the simple present "come" rather than "will come" with "if" and "when" in verb phrases.
Last edited by probus; 18-Oct-2013 at 12:51.