The uses of didn't need to & needn't have
{"Image DocumentName": "The uses of didn\u2019t need to & needn\u2019t have", "Image ImageDescription": "We use didn\u2019t need to when something was not necessary. Ex: Daniel hadn\u2019t booked a seat, but luckily the train wasn\u2019t full. He didn\u2019t need to stand. (Standing was not necessary because there were seats.) We use needn\u2019t have + a past participle for something we did which we now know was not necessary. Ex: Trevor and Laura booked a table for dinner. But the restaurant was empty. They needn\u2019t have booked a table.", "Image XResolution": "37", "Image YResolution": "37", "Image ResolutionUnit": "Pixels/Centimeter", "Image Software": "SlidePlayer", "Image YCbCrPositioning": "Centered"}