Why "be going to" is used here? Can I use "would" instead?
Native speaker’s answer
Rebecca
The idiomatic phrase "going to be", or in this case "gonna be" here is used to express future tense. However, you can replace this with "would" here and say, "if you thought that you would be cold". The main difference is that "would" implies past tense, while "going to be" talks about the future in the past tense.