HSK 3 · Sentence types › Complex sentences › Hypothetical clauses
Using 如果……,就…… for Hypothetical Situations
如果……,就…… is a common way to present a possible situation and say what follows if it happens. Learn how to form both parts, when 就 can be omitted, and how this pattern differs from nearby HSK 3 sentence types.

如果明天下雨,我们就坐地铁去博物馆。
就 introduces the planned response; the rain remains a possibility.
Read the full explanation and examples
Meaning: a possible situation and its result
The outline lists 假设复句 (hypothetical complex sentences) with the pattern 如果……,就…… at HSK level 3. In this pattern, 如果 introduces a situation that may or may not happen; 就 introduces the result, response, or plan that follows if it does. The speaker connects the two ideas rather than asserting that the situation is already true.
In English, the relation often corresponds to “if …, then ….” The situation can concern the future, a general possibility, or a present circumstance. The result may be a prediction, decision, instruction, or suggestion. The pattern does not itself say how likely the situation is.
如果明天下雨,我们就坐地铁去博物馆。
就 introduces the planned response; the rain remains a possibility.
This is a future plan: taking the subway is the chosen response if rain occurs. The speaker does not claim that it will definitely rain.
Formation and word order
如果 introduces the possible situation. In the result clause, an expressed subject goes before 就: 我们就坐地铁, not a generic 就 + complete clause. A shared or clear subject can be omitted, as in 如果你有时间,就帮我看一下这封邮件. 如果 can also follow the condition subject: 你如果有时间…….
如果你有时间,就帮我看一下这封邮件。
The subject of the result clause is understood from context.
The second clause omits its subject: the context makes clear that the listener is being asked to help. You can include a subject in both clauses when needed for clarity.
就 commonly marks the result, but it may be omitted when the connection is already clear, especially in short or conversational sentences. The outline names the paired pattern; this lesson focuses on that form. Do not assume every sentence with 如果 must contain 就.
Statements, questions, and practical responses
Use the pattern for a practical contingency: state what you will do if a situation occurs. It also works for a repeated or general result, where the result is expected whenever the situation applies.
- A statement can give a plan or prediction.
- A suggestion can use 吧 at the end of the result clause.
- A question can ask about the result or response; place the question word or question form in the appropriate clause. The 如果……,就…… frame does not make a sentence a question by itself.
如果这班公交车不来,我们就打车吧。
吧 makes the result a suggestion.
The final 吧 makes this a suggestion: if the bus does not arrive, taking a taxi is proposed.
如果每天练习十分钟,你的发音就会慢慢变好。
The speaker expresses an expected gradual result of practice, not a guaranteed outcome from a fixed number of minutes.
This describes a likely gradual result of a repeated practice, rather than a one-time decision.
Keep the meaning within its boundaries
This outline point is the hypothetical pattern 如果……,就…… . A useful distinction is the relationship between the clauses: here, one situation is presented as a possibility and the other as what follows under that possibility. The outline places this point alongside other sentence types, but this lesson does not teach those neighboring patterns as additional target forms.
- A contrast sentence sets two ideas against each other; that relation is not the hypothetical relation taught here.
- A necessary-condition sentence says a result can happen only when a condition is met; 如果……,就…… by itself does not express that restriction.
- For this pattern, ask: “What could happen, and what would follow?” Then place the possible situation after 如果 and its result after 就.
Check the clause relationship
Check that the first part names the intended condition and that the response makes sense under it. This lesson’s basic order is condition then result. In conversation, a condition can also be added afterward for clarification; that is not automatically an error, but avoid leaving its scope unclear.
如果你不舒服,要不要去医院看看?
A natural question about the listener’s preference. The condition is explicit, and 就 is omitted.
如果你不舒服,要不要去医院看看? asks what the listener would like to do. 如果你不舒服,就去医院看看吧 offers advice. Both are correct; omitting 就 gives the first question a natural form. A question and a suggestion serve different conversational purposes, so do not replace one solely because the other is also possible.
如果你不舒服,就去医院看看吧。
A suggestion with 吧, rather than a question asking the listener to choose.
Frequently asked questions
Can I leave out 就?
Sometimes, when the result relationship is clear, especially in short or conversational sentences. The outline lists 如果……,就……, so use both markers when practicing this target pattern.
Does this pattern only describe the future?
No. It can describe a general or present possibility as well as a future contingency. The key is that the first clause is presented as a possible situation and the second as its result.
Does 如果……,就…… mean the situation is likely?
No likelihood level is specified by the pattern alone. Context and other words convey how likely the speaker thinks it is.