Put the verbs in the correct tense.1 If l (not/have) so much work wouldn't have been so tired yesterday. 2 Surely scientists medication if they had had the funding. 3 If you hadn't missed the bus, you (not/be) late for work. 4 If Dan hadn't been so stressed, he (pass) the exam. (develop) the new (know) that Ken was anxious, I wouldn't have given him the extra work. (ask) for assistance if I had needed it.
Explanation: In this sentence, we are talking about a past condition and its result. The past condition is "If I hadn't had so much work" and the result is "I wouldn't have been so tired yesterday." The past perfect tense is used for the condition because we are referring to a completed action before another past action. The past simple tense is used for the result because it indicates a past action.
2. Surely scientists would have developed the new medication if they had had the funding.
Explanation: In this sentence, we are again talking about a past condition and its result. The past condition is "if they had had the funding" and the result is "scientists would have developed the new medication." The past perfect tense is used for the condition because we are referring to a completed action before another past action. The conditional perfect tense is used for the result because it indicates a hypothetical action in the past.
3. If you hadn't missed the bus, you wouldn't be late for work.
Explanation: In this sentence, we are talking about a past condition and its result, but the result is in the present. The past condition is "if you hadn't missed the bus" and the result is "you wouldn't be late for work." The past perfect tense is used for the condition because we are referring to a completed action before another past action. The present simple tense is used for the result because it indicates a general truth or a habitual action.
4. If Dan hadn't been so stressed, he would have passed the exam.
Explanation: In this sentence, we are again talking about a past condition and its result. The past condition is "if Dan hadn't been so stressed" and the result is "he would have passed the exam." The past perfect tense is used for the condition because we are referring to a completed action before another past action. The conditional perfect tense is used for the result because it indicates a hypothetical action in the past.
5. If I had known that Ken was anxious, I wouldn't have given him the extra work.
Explanation: In this sentence, we are talking about a past condition and its result. The past condition is "if I had known that Ken was anxious" and the result is "I wouldn't have given him the extra work." The past perfect tense is used for the condition because we are referring to a completed action before another past action. The conditional perfect tense is used for the result because it indicates a hypothetical action in the past.
6. I would have asked for assistance if I had needed it.
Explanation: In this sentence, we are talking about a past condition and its result. The past condition is "if I had needed it" and the result is "I would have asked for assistance." The past perfect tense is used for the condition because we are referring to a completed action before another past action. The conditional perfect tense is used for the result because it indicates a hypothetical action in the past.