I forgot to include the following sentences. Thank you.

1) My mum and I (not: I and my mum) went shopping and we bought a lot of souvenirs.
2) After a week (a week later) we came back home satisfied with this exciting experience.
3) We put everything on a counter and then we walked through the gate that checks for metal.
4) We took a bus to the hotel. I spent most of my time doing archery (playing archery)
5) We stayed at a campsite.
We always got a packed lunch from the hotel.
6) I liked going to the disco because it lay on the beach.
We made new friends who came from Milan.
7) The hotel offered room service though it was very expensive.
We went sightseeing in the city centre.

1. comma needed

2. comma needed

3. comma needed

4. playing archery

5. OK

6. "...because it was right on the beach."

7. OK

1) My mum and I (not: I and my mum) went shopping and we bought a lot of souvenirs.

Yes.

2) After a week (a week later) we came back home satisfied with this exciting experience.
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There are slight differences in meaning. "After a week" seems to suggest you came back after being gone a week. "A week later would be used if you came back a week after doing the last thing you said.

For example:
I went on vacation. I started in Florida then went to Mexico. After a week I came back.
That means you started your week long vacation in Florida then went to Mexico. Your whole vacation was one week.

I went on vacation. I started in Florida then went to Mexico. A week later, I came back.
That usually means you spent a week in Mexico.

3) We put everything on a counter and then we walked through the gate that checks for metal.

The gate that checks for metal = the metal detector.

4) We took a bus to the hotel. I spent most of my time doing archery (playing archery)

Doing is better than playing. Practicing might be best.

5) We stayed at a campsite.
We always got a packed lunch from the hotel.

Ok

6) I liked going to the disco because it lay on the beach.

Sits on the beach.

We made new friends who came from Milan.
7) The hotel offered room service though it was very expensive.

Comma before though.

We went sightseeing in the city centre.

We went sightseeing downtown.

Tust her responses. I was typing and walking. Made a few mistakes.

I agree with Matt about these:

>>>the metal detector

>>>practicing archery

=)

Here are the sentences you forgot to include:

1) My mum and I (not: I and my mum) went shopping and we bought a lot of souvenirs.

To form a correct sentence, remember to use the correct order when referring to yourself and another person. In this case, it would be "My mum and I" instead of "I and my mum." To answer a question like this, a good strategy is to identify the error in the sentence and then provide the correct version.

2) After a week (a week later) we came back home satisfied with this exciting experience.

If you want to include additional information such as "a week later" to specify the timeline, you can use parentheses or commas to separate it from the main sentence. In this case, "After a week" and "a week later" can be used interchangeably to convey the same meaning. You can make the sentence more concise by using "fully" instead of "satisfied with this exciting experience."

3) We put everything on a counter and then we walked through the gate that checks for metal.

This sentence is grammatically correct and doesn't require any changes.

4) We took a bus to the hotel. I spent most of my time doing archery (playing archery).

To make the sentence more natural, it would be better to say "I spent most of my time practicing archery" instead of "playing archery."

5) We stayed at a campsite. We always got a packed lunch from the hotel.

These sentences are grammatically correct and do not require any changes.

6) I liked going to the disco because it lay on the beach. We made new friends who came from Milan.

To make the sentence clearer, you can use "was located" instead of "lay on" to describe the disco's position on the beach. The second sentence is grammatically correct and does not require any changes.

7) The hotel offered room service though it was very expensive. We went sightseeing in the city centre.

These sentences are grammatically correct and do not require any changes.

If you have any more questions or need further explanation, feel free to ask!