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When you use a sentence that doesn't match the facts, use a subjunctive mood.
if i were you, i should buy it.
Contrary to the present, be were
if it were fine tomorrow,i would go shopping.
Contrary to the future, if he had not taken my advice, he wouldn't do it much better like this.
Contrary to the past.
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The subjunctive mood denotes a hypothetical state, which corresponds to different sentence patterns as opposed to the present tense and the past facts.
A subjunctive is a sentence pattern that denotes a hypothetical state and is a special form of verb; Indicates that what is said is not a fact, but only a hypothesis, a subjective desire, a suggestion, a guess, or a fantasy that is unlikely to be realized.
1. The subjunctive mood that is the opposite of the present fact – past tense.
Regardless of the person of the subject, the be verb in the if clause uses were; The auxiliary verb in the main clause must be in the past tense and followed by the verb form.
Example 1: If I were you, I would beat him
Example 2: If he werehere, I would beat him
2. The subjunctive mood that is the opposite of the past fact – the past perfect tense.
When using this sentence structure, there will be a situation in the clause that had had, so pay attention to distinguishing the difference between had and had.
Example 1: If he hadmoney, he would buy a car(If he had money, he would have bought a car).
In this sentence, had is a verb in the simple past tense, which translates as "to have".
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4 a 5 b 6 c 7 d 8 a
4 a Mary is sick today, and if she hadn't been sick, she would have gone to school today. Because the first sentence says that Mary is sick today, this question examines the opposite of the present situation, so the main clause uses would, should, could+ verb archetypes, and the clause uses the simple past tense.
5 b Let's look at this question separately first, because the space is in the main clause, so first look at the main clause, because the main clause can't see the specific time expressed in the question, so look at the clause, the tense of the clause is the past and the future, it can be seen that the main clause wants to express something that is opposite to the future situation, then the main clause uses could, shuold, would+ verb archetype.
6 c Let's look at this question separately first, because the space is in the main clause, so look at the main clause first, because the specific time expressed in the question cannot be seen from the main clause, so look at the clause again, this clause is a transition sentence guided by but, and the tense expressed is the simple past tense, which means "I was busy at that time", therefore, what happened in the main clause is the opposite of what happened in the past, therefore, the main clause uses could, should, would+ verb original form, and the clause uses the past perfect tense.
7 d Let's look at this question separately, in fact, there is no clause in this question, and because the space is in the main clause, because the specific time expressed in the question cannot be seen from the main clause, so we can see the previous "witouth your help", so it can be seen that this is the opposite of the past thing, therefore, the main clause uses could, should, would+ verb form, and the clause uses the past perfect tense.
8 a This question is the same as 7.
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Just check this kind of thing yourself.
To do subjunctive mood questions, you must first look at the example sentences and understand the sentence structure of the example sentences before doing the questions.
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