I have some more sentences to check on the same subject.Thank you very much!

1) I took off a day because I was ill.
Correction: I took a day off...
Or I went sick (I took a day sick leave/I asked for a day sick leave??)
2) I would like to work at my passion because I would be more motivated.
3)When I will be an adult, I would work at my passion because it is the job itself that determines my satisfaction.
I would like to work at a job which is also my passion.
4)If you work at a career, you are motivated by the prospects of promotion.
She took on (not over) the responsibility for the whole family.
5) She has taken over as the head of the family business.
I'd prefer to work at my passion because I could fulfill myself (completely).
6) If you work at your passion, you can do your job better.

1) I took a day off...

I took a sick day.
I asked for a day of sick leave.

2) I would like to work at my passion because I would be very motivated.
(When you use "more" you need to complete the comparison ... more than what??)

3)When I am an adult, I will work at my passion because it is the job itself that determines my satisfaction.
I would like to work at a job which is also my passion. <~~best phrasing yet!!

4)If you work at a career, you are motivated by the prospects of promotion.
She took on responsibility for the whole family.

5) She has taken over as the head of the family business.
I'd prefer to work at my passion because I could fulfill myself completely.

6) OK

1) The first sentence can be improved by saying "I took a day off because I was ill." This is a more natural way to express that you took some time off from work or school due to illness. You can also say "I went on sick leave for a day" or "I asked for a day of sick leave" to convey the same meaning.

2) The second sentence is grammatically correct, but it can be improved by saying "I would like to work in a field that aligns with my passion because it would make me more motivated." This conveys that you want to work in a job or profession that relates to your passion, as it would increase your level of motivation.

3) The third sentence can be rephrased to "When I become an adult, I want to pursue a career in my passion because job satisfaction is determined by the nature of the job itself." Another alternative would be "I would like to have a job that is also my passion when I grow up." Both of these versions convey the idea that you desire a job that aligns with your passion and brings you satisfaction.

4) The fourth sentence is correct, but there is a better alternative for the phrase "took on" in this context. You can say "If you pursue a career, you are motivated by the prospects of promotion." This means that if you choose a certain career path, one of your motivations is the potential for advancement or promotion within that field.

5) The fifth sentence is correct. It means that she has assumed the role of being the head or leader of the family business. However, if you are referring to the transition of responsibility from someone else to her, you can say "She has taken over the responsibility as the head of the family business."

6) The sixth sentence is grammatically correct, but it can be improved by saying "If you work in a field that is your passion, you are more likely to excel at your job." This conveys that if you pursue a job aligned with your passion, you are more likely to perform well and be successful in that role.