For I&B, a good way to look at a prompt is in terms of causes and types. You could break up paragraphs according to this.
So for the prompt 'Our identity is shaped by our experiences', think of 3 causes/reasons as to why identity is shaped by our experiences. Keep in mind that in expository essays, you should look at all angles. So look at how identity is strengthened, shaped AND weakened by our experiences, and also how these experiences can lead to belonging AND isolation.
You can also look at it in terms of types, and this would be the way to go for this prompt. What are 3 types of life experiences? These could be your 3 paragraphs. Eg. cultural experiences, family experiences, personal experiences. Then within paragraphs, look at how each of these types of experiences can ---> strengthen/weaken identity and lead to belonging/alienation.
Your paragraphs should be based on exploring all angles - therefore you won't need a 'however' paragraph for most topics.