Remember that stressed syllables are said louder and are lengthened, and unstressed syllables are pronounced more softly, and often have the vowel sounds reduced.
Sometimes, this difference can be the difference between a verb and a noun, or an adjective.
There are at least 14 pairs of words in which syllable stress alone makes this difference.
Some exams include `addict, a`ddict, `convict, con`vict, `perfect, per`fect.
一些例子包括：`addict, a`ddict, `convict, con`vict, `perfect, per`fect.
Each time the second syllable is stressed, the word is a verb.
When the first syllable is stressed, the word is either a noun or an adjective.
Let’s look some exams more closely.
`Permit and per`mit, `permit和per`mit A `permit is a noun, it is a piece of paper which authorizes you to do something.
For instance, a fishing `permit allows you to go fishing.
Permit is a verb.
It means to allow.
For instance, fishing isn’t per`mitted here without a `permit.
Another exam is `perfect and per`fect. `Perfect is an adjective.
It means 100% correct, no mistakes or errors.
The verb is perfect, it means to make something perfect.
For exam, “I want to per`fect my English” means “I want to make my English perfect”.
Make sure you stress the right syllable. It can be the difference between different parts of speech.