PURLANDTRAINING.COM has just published a wonderful guide to using ‘Unless‘ and ‘If not‘ which I highly recommend. It comes with free, downloadable worksheets. Just click on the links under the picture.
Direct download: https://purlandtraining.com/wp-content/uploads/2020/10/when-do-we-use-unless-1.pdf
Direct download: https://purlandtraining.com/wp-content/uploads/2020/10/when-do-we-use-unless-2.pdf
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