The phrase "a big drop of" is correct and usable in written English.
It can be used when describing a significant amount of a liquid or substance that has fallen or is falling.
Example: "After the rain, there was a big drop of water on the windowpane."
Alternatives: "a large amount of" or "a significant drop of".
The current quarter could see a big drop of 0.8%-1% for Britain.
I'm from New York, where we're given a lipstick-stained mug filled with dirty hot-dog water to carry down Sixth Avenue until a big drop of what is either Legionnaire's-disease-infected air-conditioner leak or somebody else's spit lands in it, then we drink that to get our immune-system boost, thank you very much.
"We though we would see a big drop, of around 15-20% because of the economy, and we weren't right," Mr Martin says.
Get a bigger drop out of your curve by snapping your wrist as hard as you can.
Last week, the Commerce Department estimated that economic growth slowed to an annual rate of 3percentt in the second quarter of this year -- a big drop from growth of 4.5percentt in the first three months of this year.
Capital investment in the North Sea could halve by 2017 unless there is urgent reform of the tax regime in light of a big drop in the price of crude oil, according to Oil & Gas UK.
A closer analysis of the ONS figures shows a big drop in consumption of non-metallic minerals used by the construction industry, such as sand, gravel, limestone and gypsum.
The group issued its first profit warning of the past year nearly 12 months ago, when it reported a big drop in prices of its sucralose artificial sweetener and weak sales in developed markets.
Wales has followed the rest of the UK with a big drop in the number of people out of work.
The unemployment rate fell from 6.6 per cent to 6.3 per cent, but this is largely the result of a big drop in the number of people looking for work: the labor force shrank by 806,000 people.
She notices a big drop in energy of the cats she eventually retires from the show.
