The phrase 'has altered considerably' is correct and usable in written English.
You can use it to describe a change or transformation in a person, thing, or situation over a period of time. Example: Since the new law was passed, the landscape of immigration in the United States has altered considerably.
However, although the 20th century has seen its observation continue to flourish, the churches' understanding of what, and for whom, the festival is has altered considerably.
Patty Beron, Patty Beron founder of SFGirl.com and an industry event connoisseur, says the Bay Area social calendar has altered considerably since the market went sour.
The tongue is central to the development of language and while the size and shape of the tongue is conserved between humans and chimpanzees, the musculature has altered considerably to account for changes in the skull shape (Coquerelle et al. 2013).
Developments since that time have altered considerably the status of Italy, which has become in effect a cooperator with the United Nations.
Bayer said the climate for its new listing had "altered considerably" since its decision to halt sales of Lipobay, a cholesterol-lowering drug.
The English judicial system had altered considerably over the previous century, with the royal judges playing a larger role in delivering justice across the country.
Astrobiologist Jack O'Matley-James athehe University of St. Andrews in Fife, Scotland and his colleagues noted that biosignatures of life on Earth have not remained the same over time, but have altered considerably over its history.
The women said having children fighting in a war has altered their outlook considerably.
Adjustment for stroke severity and age has altered the estimates considerably.
An unprecedented increase in international traffic, fuelled by the Internet and by the introduction of wavelength division multiplexing (WDM) fiber-optic technologies, has altered submarine cable systems considerably, especially their network aspect.
