There are times when I go with friends, and there are times when I go alone.
"友達と行く時もあるし、一人で行く時もある"
- There are times when I go with friends, and there are times when I go alone.
- Sometimes I go with friends and sometimes I go alone.
- Sometimes I go with friends and other times I go alone.
友達と一緒に行く時もあれば、一人で行く時もあります。
- If there are times where I go with friends then are times when I go alone.
Sometimes I go with my friends, and sometimes I go by myself.
I go shopping with my friends some of the time, and I go shopping on my own at other times.
この場合、次のような言い方ができます。
A: Do you usually go shopping with a friend or by yourself?
「いつも友達と買い物に行くの、それとも一人？」
B: Sometimes I go with my friends, and sometimes I go by myself.
「友達と行く時もあれば、一人で行く時もあります」
または次のような言い方もできます。
ーI go shopping with my friends some of the time, and I go shopping on my own at other times.
「友達と買い物に行く時もあれば、一人で行く時もあります」
ご参考まで！
アメリカ合衆国 
カナダ 
