past simple and present perfect
95245
When should I use "didn't" instead of "haven't"?
21041
past simple or past perfect why
27613
Past Perfect Continuous/Past Perfect or?
49302
before/after + past or past perfect
6340
"yet" vs. "already" with present perfect
69668
Do 'already' and 'just' require the present perfect?
93810
How is "I have come" + infinitive different from Present Perfect?
23177
Tense change: previous actions on something that's currently true
6542
Dilemma: Present Perfect Or Perfect Continuous?
10637
difference between "Have been" and "was"
121795
What is the difference between 'past' and 'present perfect;?
12613
How to use "had" correctly in a past perfect paragraph?
77020
Generalised rule for verb usage in simple present tense using participle
58714
Simple Past vs. Present Perfect: "was" vs. "has been"
90991
Adverbs + Present Perfect
114784
Gerunds:Having+past participle and being+past participle
51083
Present tense for future events