Complex sentence: A reusable shopping bag, sometimes called bag-for-life in the UK, is a type of shopping bag which can be reused many times; this is an alternative to single-use paper or plastic bags.
Split into simpler sentences: A reusable shopping bag, sometimes called bag-for-life in the UK, is a type of shopping bag which can be reused many times. It is an alternative to single-use paper or plastic bags.