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Word |
Definition/Use |
Example |
|---|---|---|
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affect (v) |
influence |
The number of users affects the response time. |
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effect (v) |
bring about, cause |
To effect a change, cut down the number of users |
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effect (n) |
result |
The effect of too many users is slow response time. |
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all |
acceptable in all cases except with a personal pronoun |
All the settings have defaults. |
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all of |
used only with a personal pronoun |
All of them are listed in Appendix A. |
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already |
beforehand |
The writer had already started the outline. |
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all ready |
completely ready |
The system will be all ready for testing. |
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all right |
satisfactory (adj) certainly (adv) |
All right is correct. Alright is not correct. |
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among |
three or more items considered collectively |
It’s difficult to choose among the many content management systems. |
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between |
two or more items considered individually |
We’re deciding between Houston, Paris, and Tokyo for the conference. |
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amount |
used with collective and mass nouns |
Equipping a training center costs a large amount of money. |
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number |
used with countable nouns |
They bought a large number of computers for the training center. |
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assure |
set a person’s mind at rest |
We assured them that the project was on track. |
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ensure |
make certain |
The procedures were tested thoroughly to ensure that they were correct. |
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insure |
protect with insurance |
In most states, cars must be insured before they are registered. |
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because |
show a cause-effect relationship |
The project was finished on time because everyone met the schedule deadlines. |
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since |
from then until now |
There have been three people in this position since last spring. |
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can |
know how to, be able to |
The server can support up to 45 servers. |
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may |
have permission to, be possible to |
You may start working on the project now. |
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might |
be possible to (less certain than “may”) |
We might finish the project on schedule. |
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comprise |
contain |
A jury comprises 12 people. |
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compose |
create by joining |
A jury is composed of 12 people. |
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constitute |
make up, form |
Twelve people constitute a jury. |
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discrete |
individually distinct, not continuous |
Conversion consists of five discrete steps. |
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discreet |
prudent, showing good judgment |
Be discreet when you call me at work. |
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farther |
physical distance |
Don’t place the unit farther than 10 feet from a vent. |
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further |
in addition, to a greater degree |
A further problem is the lack of funds. |
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if |
in the event that |
Tell me if the deadline is Friday. |
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when |
at what time (don’t use "if and when" |
Let us know when you’ll finish the draft. |
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whether |
with alternatives, used instead of "if" |
Ask whether it's due on Friday or Monday. |
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imply |
suggest |
He implied that I didn’t understand. |
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infer |
draws a conclusion |
From user questions, the staff inferred that the manual was wrong. |
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its |
possessive form of the pronoun "it" |
The printer needs to have its toner cartridge replaced. |
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it’s |
contraction meaning "it is" |
It’s time to replace the toner cartridge. |
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lay |
put or set down |
Never lay the cartridge on its side. |
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lie |
be at rest, assume a horizontal position |
Al’s dog lies under his chair at work. |
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less |
used with collective nouns |
We need less staff on this project. |
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fewer |
used with countable nouns |
We need fewer managers on this project. |
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precede |
come before |
The Internet preceded the World Wide Web |
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proceed |
continue, go on |
Proceed to the next lesson. |
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press |
put force on |
Press the Reset button to start again. |
|
type |
press a character key on a keyboard |
Type the letter A. |
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click |
position the mouse pointer; then press and release the mouse button once. Do not use "click on." |
Acceptable for writing instructions, but not as a way to describe a web link; use descriptive text instead. Don’t: Click here for Orientation information Do: Click the Cut button. (an instruction) |
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hit |
strike with force |
Don’t hit the keys on the calculator. |
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principal |
most important |
The principal topics are written. |
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principle |
rule |
Follow the principles of good writing. |
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regardless |
correct |
The meeting will continue, regardless of the forecast. |
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irregardless |
incorrect |
(Do not use.) |
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take |
to convey, away from |
The train will take you to the city. |
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bring |
to convey, toward |
The bus will bring you here. |
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that |
introduces a phrase essential to the meaning of the word it modifies |
We purchased the software that provided the necessary formats. |
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which |
introduces a phrase that is not essential to the meaning of the word it modifies, and so should be followed by a comma |
The new software, which will be installed next week, provides the necessary features. |
















