He has been busy since last week and still has no time to be with his family.

[Alice Chu]

1)He has been busy since last week and still has no time to be with his family.

Does the phrase "since last week" mean something started during the last week, and we don’t know on which day it started, or that something started a week ago?

 

[5jj]

The words do not make that clear.

 

[jutfrank]

Where are you getting these sentences from?

No, the phrase since last week does not mean that.

 

[Alice Chu]

I wrote the sentence.
Please tell me what the phrase "since last week" means.

 

[emsr2d2]

I wrote the sentence.
Please tell me what the phrase "since last week" means.

It simply means that something started sometime last week. Today is Wednesday 31 March. For me, "last week" means any time between Monday 22 March and Sunday 28 March. It's fairly imprecise.