一番遅くて何時に家を出れば間に合いますか?って英語でなんて言うの？

You want to ask someone what time they can leave their home at the latest to make it to school/work on time. You choose the most appropriate of the above suggested queries.

What time must you leave your house to get to work on time? What time do you have to leave by? If you don't want to be late, what is the latest time you can leave? What is the latest time you have to leave by? Is there a certain time you must leave to keep from being late?

"What's the latest you can leave home and still make it to work on time?" and "At what time must you leave your house to go to work?" Both of these questions are asking at what time must you leave your home so you are able to make it/get to work at the correct time, so you are not late. "At what time must you leave your house to go to work?" already implies what time as you have suggested that they must get to work.

*punctual - on time *accurate - precise *formal - exact or confirmed You can use any of the three questions when you want to ask someone what time they leave home so they can be on time for work or school or any appointment. If you want to know the most accurate time a person has to leave their home to be on time for work, you can use the first question. If you want to know the latest time, not the best time but the very last minute the person needs to leave home to be on time for work, you will use the second question. The third question is the same as the first question, but it is a more formal way of asking.

When you want to ask someone what time they can leave their home at the latest to make it to school/work on time; then you may say this in the following ways: -What's the latest time you can leave your house and still make it to work/school on time? -What is the best time to leave your house for work/school, so you can just make it there on time?

"What time do you need to leave the house to get to work on time?" - This question is asking for a specific time, leaving no misunderstanding to when they need to leave the house. "To be on time for work, what time must you leave the house?" - This question is indicating the importance of being on time for work, by then asking for a specific time the person needs to leave by. "What's the latest you can leave home and still get to work on time?" - This question is not asking for the best time to leave, but up to the exact minute they have in order not to be late for work.