‘If’ usually introduces conditional clauses. The same applies to other conditionals such as unless, should and in case which, however, perform other functions in different contexts. As conditionals, ...
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English Teacher Claire on MSNOpinion

How to use English conditionals the right way

Conditionals can be confusing, but they don’t have to be! In this lesson, Claire explains the zero, first, second, and third conditionals with simple examples that actually make sense. You’ll learn ...
What is a conditional sentence? Conditionals are structures which express a situation and the possible results. If it rains, I'll stay inside and watch a film. Use the zero conditional to express ...