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Using whether, even if, even though, supposing, imagine and similar conditional expressions.
First conditional: If + present simple, ... will + bare infinitive. Unless = if not.
Practice forming natural conditional sentences from scrambled words.
English uses a variety of expressions to introduce conditions, alternatives, hypothetical situations, and concessions.
Expressions such as whether, even if, even though, supposing, suppose, imagine, and in the event that can add meanings that go beyond a simple if-clause.
Whether introduces two or more possible alternatives and indicates that the result does not depend on which alternative is true.
For example, I do not know whether he will come and We will go whether it rains or not.
Whether or not emphasizes that the result applies regardless of whether the condition is fulfilled.
For example, We will continue whether or not they agree.
Whether is preferred when presenting alternatives or when the question involves two possible states, while if often introduces a condition.
Compare I do not know whether she will come with If she comes, we will start the meeting.
Whether can be followed by a to-infinitive when the meaning is to choose between alternatives.
For example, I cannot decide whether to stay or leave.
Whether can be paired with or to explicitly state alternative possibilities.
For example, I do not know whether to call him or send a message.
Even if introduces a condition whose occurrence does not change the main result.
For example, I will go even if it rains.
Even if emphasizes that the result remains true despite the condition, whereas if simply introduces a condition.
Compare If it rains, we may stay home with Even if it rains, we will go out.
Even though introduces a fact that contrasts with the main clause but does not normally express a condition.
For example, Even though it was raining, we went for a walk.
Even if introduces a hypothetical or possible condition, while even though introduces a fact that is already true.
Compare Even if it rains, we will go with Even though it is raining, we are going.
Suppose can introduce a hypothetical situation for discussion or consideration.
For example, Suppose you lost your passport. What would you do?
Supposing can introduce a hypothetical condition, often inviting the listener to consider an imagined situation.
For example, Supposing the train were cancelled, what would we do?
Suppose and supposing have similar conditional meanings, but supposing often sounds more exploratory or tentative.
Both can introduce an imagined situation for discussion.
Imagine can introduce a hypothetical situation that the speaker wants the listener to consider mentally.
For example, Imagine you were offered a job abroad. Would you accept it?
Imagine can be followed by a full clause when presenting a hypothetical situation.
For example, Imagine you won the lottery and had no financial worries.
Imagine can also be followed by an -ing form when referring to a possible or hypothetical situation.
For example, Imagine living in another country.
Assuming that introduces a condition that the speaker accepts as a basis for considering a conclusion or result.
For example, Assuming that the data are accurate, the conclusion is reasonable.
Assuming that presents a condition as a working assumption, while if is more neutral about whether the condition is true.
For example, Assuming that he is telling the truth, we can trust the information.
In the event that introduces a possible situation, especially in formal or official language.
For example, In the event that the flight is cancelled, passengers will be given a refund.
In the event of is followed by a noun phrase and introduces a possible situation for which a procedure or response applies.
For example, In the event of an emergency, leave the building immediately.
Otherwise can express the result that will occur if a stated condition is not fulfilled.
For example, Hurry up, otherwise we will miss the train.
Or else can introduce a negative consequence if the preceding instruction or condition is not followed.
For example, Put the documents somewhere safe, or else you may lose them.
No matter whether introduces alternatives that do not affect the main result.
For example, No matter whether he agrees, we will continue.
No matter what introduces an unrestricted condition in which the result remains the same regardless of the circumstances.
For example, No matter what happens, we will support you.
No matter can combine with question words to express that the result remains unchanged regardless of place, time, or person.
For example, No matter where you go, you will find people speaking English.
English can express conditional relationships without an explicit if-clause by using linking expressions, adverbs, imperatives, or alternative constructions.
For example, Hurry up, otherwise we will miss the train and Take an umbrella in case it rains.
Formal writing often uses expressions such as assuming that, in the event that, and whether or not to express conditions and alternatives precisely.
These expressions are particularly common in legal, academic, technical, and administrative contexts.
Conversational English commonly uses suppose, supposing, imagine, even if, and no matter what to frame hypothetical situations or emphasize outcomes.
These forms can make hypothetical discussion more natural and interactive.
Use each conditional expression according to its meaning and grammatical pattern rather than treating all of them as direct synonyms of if.
Common mistakes include confusing even if with even though, using in case as a direct replacement for if, confusing whether with if, and using no matter constructions incorrectly.