### Section 6.5

## Comma Splice

Never link two independent clauses with just a comma; this is known as a *comma splice error*.
You can correct a comma splice in four ways:

- Separate the independent clauses into two separate sentences.
Punctuate both sentences with periods.

- Replace the comma with a semicolon or
with a semicolon and a conjunctive
adverb such as
*however* or *furthermore*. (The
conjunctive adverb is then normally followed by a comma.)

- Replace the comma with a comma and a coordinating conjunction.

- Make one of the clauses into a subordinate
clause.

#### Unacceptable

```
In 1931 Oppenheimer attempted to find an equation for the photon that would
be an analogue to Dirac's equation for the electron
```**,** he failed
in this effort.

#### Acceptable

```
In 1931 Oppenheimer attempted to find an equation for the photon that would
be an analogue to Dirac's equation for the electron
```**.** He failed
in this effort.

#### Acceptable

```
In 1931 Oppenheimer attempted to find an equation for the photon that would
be an analogue to Dirac's equation for the electron
```**;** he failed
in this effort.

[or ". . . electron; however, he failed . . ."]

#### Acceptable

```
In 1931 Oppenheimer attempted to find an equation for the photon that would
be an analogue to Dirac's equation for the electron
```**, but** he
failed in this effort.

#### Acceptable

**Although** in 1931 Oppenheimer attempted to find an
equation for the photon that would be an analogue to Dirac's equation for the
electron, he failed in this effort.

## Comma Splice ##

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