Whaat is 分句和從句?兩者分別何在?
另外, 本人想還問以下兩句中,為何第１句的and didn't know what to do是分句,而第 2 句的because she didn't know what to do是從句?還有我看一本英文用法書,為何第１句的and (she) didn't know what to do的 she 可以省略,但第 2 句的because she didn't know what to do的 she 則不可以省略?
(1)She was depressed,and didn't know what to do.
(2)She was depressed,because she didn't know what to do.
- AsLv 71 十年前最愛解答
Firstly, let's look at these two clauses:
從句= subordinate clauses(A subordinate clause—also called a DEPENDENT
clause—will begin with a subordinate conjunction or a relative pronoun and will contain both a subject and a verb. This combination of words will not form a complete sentence. It will instead make a reader want additional information to finish the thought.
Here is a list of subordinate conjunctions:
BECAUSE<--------- You used this in your second sentence.*******
in order that once
分句= Coordinate clauses
Traditionally, a coordinate clause is regarded as having an 'equal' or grammatically 'independent' relationship with the other clause or clauses in the sentence.
One way to locate a coordinate clause is to look at the coordinate conjunction which connects it with an earlier clause. Some of the familiar coordinate conjunctions are 'and', 'but' and 'or'.
Now let's look at your second sentence:
(2)She was depressed,because she didn't know what to do.<----- The comma is
She was depressed because she didn't know what to do.
" because" is a subordinate conjunction and " she didn't know what to do."
is a dependent clause, so you cannot take out the pronoun" she".
How about the " she" in your first sentence?
(1)She was depressed and didn't know what to do.
" and" is not a subordinate conjunction.
It is an coordinate conjunction only.
Perhaps you may now know why your grammar book says you may
take away the second pronoun " she".
That's all for now.
- 匿名1 十年前
She was depressed,and didn't know what to do.
In math we called this type "distributive law" from elementary algebra.
e.g. AB +AD +3A = A(B +D +3)
The original equivalent sentence is "She was depressed, and she was unhappy, and she didn't know what to do."
"plus+ " in logic and math refers to "and"
So apply the distributive law, the sentence becomes
She (was depressed, and unhappy, and didn't know what to do.)
Beautify by taking out the brackets
She was depressed, and unhappy, and didn't know what to do.
The end result is shorter sentences.
So the rationale behind grammar rules and math are inseparable.
Same thing here, original sentence:
The rationale behind grammar rules and the rationale behind math are inseparable.