2 Grammar Rules Direct Indirect past Tense past Perfect Tense present Tense → past Tense future Tense future in the past can/may → could/might shall/will → should/would must/ought to must/ought to need need had better had better Direct Indirect past Tense → past Perfect Tense present Tense → past Tense future Tense → future in the past can/may → could/might shall/will → should/would must/ought to → must/ought to need → need had better → had better Grammar