In the Spiderwick books Arthur Spiderwick was a scientist who mostly studied faeries.
He mainly studied birds; finches were the main ones he studied.
Present perfect is formed with: have/has + past participle.The past participle of study is studied. So the present perfect is:have studied --- I have studied English Grammarhas studied -- She has studied algebra
electronics
Female Wasps
Wheather
weather
The weather
She studied mostly mathematics and geometry and was inspired by all mathematicians ..... She studied other subjects as well but often she studied mathematics.
he studied mostly in his study after university
From Science class, mostly bones. We studied owl droppings and it consisted of mostly bones!
Sometimes, but mostly no, they have to be trained.
studied chimps in east africa mostly
Einstein mostly studied physics and chemistry
He observed E=MC2 studied mostly physics.
Anne frank wanted to study mostly music and acting, she mostly did study latin and greek
In geometry, angles are studied mostly in relation to each other. In Trigonometry, angles are studied in relation to side lengths and triangles.