1. We have three PE classes a week.
2. We have three PE classes every week.
3. We have three PE classes each week.
[Are the tree the same?]
4. We take three PE classes a week.
5. We learn three PE classes a week.
[Can we use 'take' or 'learn' here? Are #4 and #5 the same as #1?]
No, #5 is not the same as the others. Whether you learn anything in the PE classes has nothing to do with the fact that you go to three PE classes each week. The others do mean the same thing, that you are going to PE class three times a week.
1. "We have three PE classes a week." - This sentence implies that there are three PE classes scheduled for each week, without specifying any particular days or times.
2. "We have three PE classes every week." - This sentence indicates that there are three PE classes scheduled for every single week, with a consistent and fixed schedule.
3. "We have three PE classes each week." - This sentence is similar to the previous one, suggesting that there are three PE classes scheduled for each week, but it does not necessarily imply a fixed schedule.
Regarding the usage of "take" and "learn" in #4 and #5:
4. "We take three PE classes a week." - This sentence suggests that the students are actively participating in or attending three PE classes on a weekly basis.
5. "We learn three PE classes a week." - This sentence does not sound natural. Instead, it would be more appropriate to say "We learn during three PE classes a week." or "We learn different things in three PE classes a week."
In conclusion, #1 and #4 convey similar meanings, denoting the frequency or number of PE classes attended per week. However, #5 does not properly express the intended meaning and needs revision.