Friday, March 20, 2020
20 Pairs of One-Word and Two-Word Forms
20 Pairs of One-Word and Two-Word Forms 20 Pairs of One-Word and Two-Word Forms 20 Pairs of One-Word and Two-Word Forms By Mark Nichol Many common words and phrases are identical except for a strategic letter space apart and ââ¬Å"a partâ⬠come to mind and though knowing which form to use in a sentence is often obvious (as in that example), the difference can be subtle. Here are some of the less clear-cut pairs: 1. Ahold/a hold: Ahold is a variant of the noun hold, used in such sentences as ââ¬Å"Iââ¬â¢ll get ahold of you later.â⬠But when you mean to refer to an actual grip on something, use two words: ââ¬Å"She really has a hold on you.â⬠If itââ¬â¢s hard to decide which form to employ, try this test: If you can insert an adjective between a and hold, the two-word form is appropriate. 2. Already/all ready: Use the former when you need an adverb, as in ââ¬Å"I told you already.â⬠The latter form is correct in sentences such as ââ¬Å"Weââ¬â¢re all ready for the party.â⬠3. Alot/a lot: These two forms are interchangeable except in one significant respect: The one-word version is wrong. It is used often in informal writing and may one day be standard, but until you get the official memo, refrain from using it if you want to be taken seriously as a writer. 4. Alright/all right: See item number 3. 5. Altogether/all together: The one-word form, an adverb, suffices to mean ââ¬Å"completelyâ⬠or ââ¬Å"in total,â⬠as in ââ¬Å"Altogether, we saved $100 on the deal.â⬠(It also means ââ¬Å"nudeâ⬠in the idiomatic phrase ââ¬Å"in the altogether.â⬠) The phrase is appropriate for sentences such as ââ¬Å"We are all together in this.â⬠6. Anybody/any body: The one-word form is a pronoun used in such constructions as ââ¬Å"He doesnââ¬â¢t get along with anybody.â⬠The two-word adjective-noun form is applicable in limited contexts, such as in the sentence ââ¬Å"Any body in motion responds to gravity.â⬠7. Anymore/any more: The one-word form is used as an adverb in sentences such as ââ¬Å"We donââ¬â¢t go there anymoreâ⬠; the two-word form consists of the adjective any and the noun more, as in ââ¬Å"I just canââ¬â¢t eat any more of that pie.â⬠8. Anyone/any one: The one-word form is a pronoun, synonymous with anybody, used as in ââ¬Å"Anyone can make that claim.â⬠ââ¬Å"Any oneâ⬠consists of the adjective any and the noun one, as in ââ¬Å"Any one of you might be next.â⬠9. Anyplace/any place: The adverb anyplace is a synonym for anywhere: ââ¬Å"She wonââ¬â¢t let me go anyplace without her.â⬠The latter usage is an adjective-and-noun phrase that describes a location: ââ¬Å"He doesnââ¬â¢t want to go to any place he canââ¬â¢t smoke.â⬠10. Anything/any thing: Anything is the likely usage: ââ¬Å"I donââ¬â¢t remember anything.â⬠The two-word adjective-noun form is generally separated by an another adjective: ââ¬Å"Sheââ¬â¢s just does any little thing she wants.â⬠11. Anytime/any time: To describe with what frequency something might occur, use the one-word adverbial form: ââ¬Å"Stop by anytime.â⬠The two-word adjective-noun form is preceded by the word at: ââ¬Å"You may leave at any time.â⬠12. Anyway/any way: Anyway is a synonym for anyhow: ââ¬Å"We didnââ¬â¢t want to go anyway.â⬠The two-word adjective-noun form is preceded by the word in: ââ¬Å"That doesnââ¬â¢t change the results in any way.â⬠13. Awhile/a while: The noun phrase ââ¬Å"a whileâ⬠and the adverb awhile are virtually interchangeable in a sentence, though you should precede the two-word form with the word for: ââ¬Å"I think Iââ¬â¢ll sit here for a whileâ⬠and ââ¬Å"I think Iââ¬â¢ll sit here awhileâ⬠mean the same thing. 14. Cannot/can not: Cannot is virtually the only proper alternative. The second usage is wrong except in the correct awkward construction in the sentence ââ¬Å"I can not go,â⬠meaning ââ¬Å"I can decide not to go.â⬠15. Everyday/every day: The one-word form is an adjective meaning ââ¬Å"ordinary,â⬠used to describe something usual as in ââ¬Å"These are my everyday clothes.â⬠The two-word phrase, an adverb, is used in such sentences as ââ¬Å"I go there every dayâ⬠to explain how something is done. 16. Everyone/every one: To refer to everybody, use one word: ââ¬Å"Everyoneââ¬â¢s a critic.â⬠To emphasize a single individual or item, use two words: ââ¬Å"Every one of them is broken.â⬠17. Everything/every thing: Everything is the default choice: ââ¬Å"Youââ¬â¢ve ruined everything.â⬠The two-word adjective-noun form is usually divided by an additional adjective: ââ¬Å"Every little thing she does is magic.â⬠18. Maybe/may be: The first choice is an alternative to the adverb perhaps; the second is a verb phrase used in such sentences as ââ¬Å"It may be that she was right after all.â⬠19. Overtime/over time: As one word, this means work done beyond a regular shift: ââ¬Å"Iââ¬â¢ve worked overtime several days this week.â⬠As two words, it refers to the passage of time: ââ¬Å"Over time, weââ¬â¢ve seen dramatic changes.â⬠20. Sometime/some time: The one-word form is an adverb describing vagueness about when something will happen, as in ââ¬Å"Iââ¬â¢ll get around to it sometime.â⬠Want to improve your English in five minutes a day? Get a subscription and start receiving our writing tips and exercises daily! Keep learning! Browse the Vocabulary category, check our popular posts, or choose a related post below:50 Handy Expressions About HandsHow Long Should a Paragraph Be?Comma After Introductory Phrases
Wednesday, March 4, 2020
Regeneration of Brain Cells
Regeneration of Brain Cells For almost 100 years, it had been a mantra of biology thatà brain cells or neuronsà do not regenerate. It was thought that all your significant brain development happened from conception to age 3.à Contrary to that widely held popular belief, scientists now know that neurogenesis continuously occurs in specific regions in the adult brain. In a startling scientific discoveryà made in the late 1990s, researchers at Princeton University found that new neurons were continually being added to the brains of adult monkeys. The finding was significant because monkeys and humans have similar brain structures. These findings and several others looking at cell regeneration in other parts of the brain opened up a whole new line of research about adult neurogenesis, the process of the birth ofà neurons from neural stem cells in a mature brain.à Pivotal Research on Monkeys Princeton researchers first foundà cell regeneration in the hippocampusà and the subventricular zone of theà lateral ventriclesà in monkeys, which are important structures for memory formation and functions of the central nervous system.à This was significant but not quite as important as the 1999 finding of neurogenesis in theà cerebral cortexà section of the monkey brain. The cerebral cortex is the most complex part of the brain and scientists were startled to find neuron formation in this high-function brain area. The lobes of the cerebral cortexà are responsible for higher-level decision making and learning. Adult neurogenesis was discovered in three areas of the cerebral cortex: The prefrontal region, which controls decision-makingThe inferior temporal region, which plays a role in visual recognitionThe posterior parietal region, which plays a role in 3D representation Researchers believed that these results called for a fundamental reassessment of the development of the primate brain. Although the cerebral cortex research had been pivotal for advancing scientific research in this area, the finding remains controversial since it has not yet been proved to occur in the human brain. Human Research Since the Princeton primate studies, newer research has shown that human cell regeneration occurs inà the olfactory bulb, which is responsible for sensory information for the sense ofà smell, and the dentate gyrus, a part of the hippocampus responsible for memory formation. Continued research on adult neurogenesis in humans has found that other areas of the brain may also generate new cells, particularly in the amygdala and the hypothalamus. The amygdala is the part of the brain governing emotions. The hypothalamus helps maintain theà autonomic nervous system and the hormone activity of the pituitary, which controls body temperature, thirst, and hunger and isà also involved in sleep and emotional activity. Researchers are optimistic that with further study scientists might one day unlock the key to this process of brain cell growth and use the knowledge to treat a variety of psychiatric disorders and brain diseases, like Parkinsons and Alzheimers. Sources Fowler, C D, et al. ââ¬Å"Estrogen and adult neurogenesis in the amygdala and hypothalamus. Brain research reviews., U.S. National Library of Medicine, Mar. 2008.Lledo, P M, et al. ââ¬Å"Adult neurogenesis and functional plasticity in neuronal circuits. Nature reviews. Neuroscience., U.S. National Library of Medicine, Mar. 2006.ââ¬Å"Princeton - News - Scientists Discover Addition of New Brain Cells in Highest Brain Area.â⬠à Princeton University, The Trustees of Princeton University.Vessal, Mani, and Corinna Darian-Smith. ââ¬Å"Adult Neurogenesis Occurs in Primate Sensorimotor Cortex following Cervical Dorsal Rhizotomy. Journal of Neuroscience, Society for Neuroscience, 23 June 2010.
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