When to use 'that':
When a time element comes after the verb: Freddy said that on Friday he would rake the leaves, or, Freddy said on Friday that he would rake the leaves.
When the point of the sentence comes late: Johnny found that the old violin hidden in a trunk in his attic wasn't a real Stradivarius.
When there are two more verbs after the main one: Silvio thinks the idea stinks and Paulie does to. This is confusing, does Silvio think that the idea stinks or that Paulie does? A that in the right place clears this up.
When a time element comes after the verb: Freddy said that on Friday he would rake the leaves, or, Freddy said on Friday that he would rake the leaves.
When the point of the sentence comes late: Johnny found that the old violin hidden in a trunk in his attic wasn't a real Stradivarius.
When there are two more verbs after the main one: Silvio thinks the idea stinks and Paulie does to. This is confusing, does Silvio think that the idea stinks or that Paulie does? A that in the right place clears this up.
Very interesting! I tend to leave thats out when I write and then repent and stick them in everywhere. I didn't know there were specific rules about it. I will have to pay closer attention!