Which expression is correct? "I've already started working on it" or "I've already started to work on it"
42023
"Started to work" vs "Started working"
27003
When to properly use Present Progressive statements?
77813
Using perfect constructions after "since"
157353
Usage of "When doing something"
13294
Can "firstly" be used in the same meaning as "at first/initially"?
14620
How to correctly use the present perfect tense
508
"Have been doing" and "have done"
44646
"To work for" vs. "to work in" vs. "to work at"
155567
"It is time now" or "It is now time"?
37721
what is the difference between - I make it to go and I make it go?
28671
Is it correct to use two present participles sequentially?
49945
"start" and "begin", is there a difference?
79097
When to begin a sentence with "Therefore"
64359
to finish vs. to have finished
82727
"Let’s start speaking" or "Let’s start to speak"
92546
Which is correct: “I’m done” or “I have finished”?
153998
Differentiate "it is said" from "it has been said"