Past Perfect in general conversion
8497
When is the past perfect exactly needed?
49302
before/after + past or past perfect
22902
Difference in meaning and use of future perfect forms
12019
Can we use the present perfect in this case?
21925
Why do people sometimes use the past perfect form of a verb when the past would suffice? (e.g. "you had mentioned")
96368
Simple Past vs. Present Perfect
143589
How do we use zero conditional and first conditional to talk about things in the past
57204
present perfect vs past perfect
130541
What category does the 'the recent perfect' belong to?
93831
Between Present Perfect and Simple Past, which tense indicates a finished action?
143716
Is such participle clause reducing usage constrained to only past tense?
127245
Understand "ibase" and "obase" in case of conversions with bc?
69510
Do tenses in a time clause never back-shift in reported speech?
94293
Past perfect or simple past with 'ago'?
35695
Past perfect or past simple with before
55521
Mixing tenses in past tense fiction
23177
Tense change: previous actions on something that's currently true