CalifJimanonymousThe examples I gave are grammatically correct and common enough, yet they seem to violate the advice you gave in your answer.Yes. That's what "exception" means. Almost all of them fit into one of two types of exception.
1) bargaining or reciprocal benefits
I'll buy the pizza if you'll buy the beer.
2) indirect questions
I didn't know if he would want the car on Sunday or not.
You might include a third type, which has politeness formulas.
If you would like to substitute something else for the salad, we can do that for you.
CJ
Conditionals cover a wide range of meanings. The examples I gave and your ex 1. are not exceptions, but typical of the very common uses of conditional clauses. To say they are 'exceptions' is thoroughly misleading.
I don't know why you give an example of an embedded question. The OP seemed to be asking about conditionals, at least their example would indicate that.
anonymous To say they are 'exceptions' is thoroughly misleading. The exceptions I gave were exceptions to the rule I stated. I don't think anything could have been clearer.
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anonymousTo say they are 'exceptions' is thoroughly misleading.
The exceptions I gave were exceptions to the rule I stated. I don't think anything could have been clearer.
CJ