How would you explain the meaning of this word if you it? (not know) We would be happier now if you the dinner when we called you. (not refuse) If I were you, I there tomorrow.…

Certainly! Here’s how to convey the meanings by using the appropriate verbs in their negative forms:

1. If you knew the meaning of this word: This implies that if you had the knowledge of the word, you would be able to explain it.
2. We would be happier now if you hadn’t refused the dinner when we called you: This suggests that if you had accepted the dinner invitation, current happiness levels would be improved.
3. If I were you, I wouldn’t go there tomorrow: Here, it indicates that if you were in the other person's situation, you would choose not to go.
4. If Ken doesn’t mend the car, who will do it?: This question implies that there is an expectation for Ken to fix the car, and if he does not, it raises a concern about who else will take on the task.
5. If I hadn’t been in a hurry when I got up, I wouldn’t have caught the train: This indicates that being in a hurry was the reason for catching the train, and if that had not been the case, the outcome would have been different.
6. She won't finish it on time if she doesn’t start right now: This emphasizes the urgency of beginning the task in order to meet the deadline.
7. Had I driven slowly, I wouldn’t be in the hospital now: This expresses that a more careful driving pace would have resulted in avoiding the current situation of being in the hospital.
8. She would be a bit overweight if she hadn’t begun to exercise a few months ago: This implies that starting to exercise was a factor in maintaining her current weight.
9. Had he not let me know, I wouldn’t have collected him at the airport tomorrow morning: This suggests that the action of letting you know was crucial for you to plan to pick him up.

Feel free to ask for more details or further assistance!