They had eaten. vs They had been eating
107985
Had done / had been doing
121795
What is the difference between 'past' and 'present perfect;?
93677
Difference between and usage of "Them" and "These/those"
78336
past simple or present perfect
154084
Having done something,... vs Doing something,
16625
"... that had stopped half an hour ago" VS " ... that had stopped half an hour before/earlier"
82982
past simple vs past perfect
24661
"had they known" or "if they had known"
49302
before/after + past or past perfect
157375
Had been/have been... tenses agreement
66188
Mixing past tenses in the same sentence
8496
“I saw a dog” vs. “I have seen a dog”
494
Why do we say "It's time we ate" and not "It's time we eat"?
158606
"Had better" — what is the meaning of this grammatically?
98035
When do I use "was" and when do I use "were"
132617
Correct usage of was/were on the object of a sentence
114229
What is the difference between "were" and "have been"?