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English for Chemists
lesson 2
GV: Châu Nhật Bằng
Trường: ĐH Bà Rịa – Vũng Tàu
- Vocabulary
Composition: thành phần
- Paraffins
- Naphthenes
- Aromatics
- Asphaltenes
- sulfur: lưu huỳnh
- oxygen, nitrogen, hydrogen
- metal
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- Vocabulary
Characteristics: tính chất
Density: tỉ trọng
API (American Petroleum Institute) gravity: độ API
Sulfur content: nồng độ lưu huỳnh
Viscosity: độ nhớt
Pour point: nhiệt độ đông đặc
Salt content: nồng độ muối
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- Vocabulary
Classification: phân loại
Sweet oil: dầu ngọt
Sour oil: dầu chua
Heavy oil: dầu nặng
Light oil: dầu nhẹ
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- Vocabulary
OPEC Organization of Petroleum Exporting
Countries
IUPAC: International Union of Pure and Applied
Chemistry
SI:International System of Units (Système
International d’unités)
Barrel (bbl): 1bbl= 42 US gallon=159 liters
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- Grammar of sentences
Clauses
Clauses are the building blocks of sentences. A
clause is group of words that contains a subject
and a verbs
Ex - chemistry is a science
- when the first oil well was first drilled in 1859
These are not clauses:
- after drilling the first oil well
- to produce kerosene
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- Prefixes
Un- ( uncomfortable, uncountable, unemployed,
unhappy, unlucky, unprofessional, unknown,
unusual, unwell…)
In-( incorrect, inactive, inconvenient, indirect,
invisible…)
Dis-(dishonest, disorder, disbelief, dislike,
disagree…)
Ir-, il-, im- (irregular, irresponsible, illegal, illogical,
impossible, impolite…)
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- Suffixes
-able, -ible (remarkable, avoidable, memorable,
valuable, divisible..)
-ed (bored, shocked, pleased…)
-ing (boring, shocking, pleasing, worrying…)
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- Plural Noun
-s 1 cat 2 cats
1 ipad 2 ipads
1 cup 2 cups
1 club 2 clubs
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- Plural Noun
-ES when noun end with one of these sounds
s z ch sh dg
1 page 2 pages
1 box 2 boxes
1 lunch 2 lunches
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- Plural Noun
Irregular Noun
Man men
Woman women
Child children
Person People
Mouse Mice
Datum data
Nucleus nuclei
Spectrum spectra
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- Grammar of sentences
Clauses
Dependent
Independent
Subordinator + S + V
S+V
Subordinator: if, although, after, before, after, as
soon as, unless, who, which, that, ….
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- Grammar of sentences
COMPOUNDCOMPLEX
COMPLEX
Kind of sentences
COMPOUND
SIMPLE
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- Grammar of sentences
Simple sentence
A simple sentence is one independent clause
Ex:
- I enjoy playing tennis with my friends every weekend
- I enjoy playing tennis and look forward to it every weekend
- My friends and I played tennis and went swimming this weekend
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- Grammar of sentences
Compound sentence
A compound sentence is two or more independent
clauses joined toghether
3 ways 1. Coordinator I enjoy tennis, but I hate
golf.
2. Conjunctive I enjoy tennis; however, I
hate golf.
adverb
3. Semicolon I enjoy tennis; I hate golf.
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- Grammar of sentences
Coordinators Conjunctive Sentence
adverbs
and moreover You study English at school;
moreover, you should watch TV in
besides… English at home.
but however Ihave learnt English for a long time;
however, I can not speak well
nevertheless..
or otherwise I try hard to study English; otherwise, I
need to find a new way to study it
so consequently I have tried my best; therefore, I know
I will be successful
therefore
thus…. www.themegallery.com
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