HAVE BEEN / HAS BEEN / HAD BEEN - How to Use These Forms Correctly (with...


source: Learn English Lab    2017年10月20日
***** RELATED LESSONS *****
1. Most Common MISTAKES in English & How to Avoid Them: https://goo.gl/n8BJ7v
2. HAVE HAD / HAS HAS / HAD HAD: https://goo.gl/Aj3hRD
3. SHOULD HAVE / COULD HAVE / WOULD HAVE: https://goo.gl/X2bw7J
4. Correct Use of COULD and WOULD: https://goo.gl/oC2qKX
5. All GRAMMAR lessons: https://goo.gl/A3VuGh
6. All MODAL VERBS lessons: https://goo.gl/v9fCh8
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