A
balanced sentence construction, also known as a parallel structure, is
essential for syntactically sound writing. It means that the first structural choice you make in a sentence must be maintained as the sentence continues.
Rather
than spending time on explanation, let us look at many examples.
The
following sentences fail the parallelism test [the correct form is shown in the
brackets after each one].
Whisky must be made from at least 51% corn; it must be aged in charred new
oak barrels; only pure water can be added to it; and it must not exceed 125 proof going into the barrel [it can be diluted with pure water only].
The class has one French student, several Italians, Peter who is from
England, and Anastasia who is a Russian [...several Italians, an Englishman called Peter,
and a Russian called Anastasia].
The students who
listen to me, laugh at all my jokes and if they are prepared to follow my instructions
will get top marks [...who
listen to me, laugh at all my jokes, and are prepared to follow my
instructions will get top marks].
John's pronunciation of
English is the same as Peter, who is from the same country [...the same as Peter’s...].
The best things to
do when learning vocabulary is to choose a few words only, turn off the radio,
music, the internet, walk about the room and visualizing the word [...and visualize the word].
The courses are
taught by teachers, but the schedules for the classes by the University
Administration [...but the
schedules for the classes are set by the University Administration].
Eating all the food
was selfish enough of you, but to allow my cat to starve too was cruel [...but allowing my cat to starve
too was cruel].
It is neither nice
or polite to point out grammar mistakes, but alas it is my job [It is neither nice nor polite…].
I have some books
here both for Paul and Maria [I have some books here both for Paul and for Maria
OR I have some books here for both Paul
and Maria].
I tell people I
come either from Ireland or England or, sometimes, America; it depends on who I
am talking to and how much I want to confuse them [I tell people I come either from
Ireland or from England or, sometimes, from America…].
If we continue
burning fossil fuels and to increase the power of computers, the world in 2025 will
have loads of iPads and no people in it [If we continue burning fossil
fuels and increasing the power of computers…].
I don’t want to
bother carrying a suitcase or get a taxi, so I am boarding the plane in jogging
gear and will run from the airport to my hotel [I don’t want to bother carrying
a suitcase or getting a taxi…].
I can easily eat my
fill at the dinner and to run all the way back home [I can easily eat my fill at the
dinner and run…].
I am taking plenty
of food both for myself and my walking partner [I am taking plenty of food both
for myself and for my walking partner OR for both myself and my walking partner].
Either you do what
I say or will suffer the consequences [Either you do what I say or you will suffer the
consequences].
Her tactic is
always to sit in the corner and peering out from there [Her tactic is always to sit in
the corner and peer out from there].
The advantages of
being a teacher are seeing the light in students’ eyes when they understand
something, and you can also use a big stick [The advantages of being a teacher are seeing the
light in students’ eyes when they understand something, and being able to use a
big stick].
If you have a large
debt, you can either pay it or you can run away to another country [If you have a large debt, you
can either pay it or run away to another country].
Running marathons and
exercising are not as fun as cigars and whiskey [Running marathons and exercising are not
as fun as smoking cigars and
drinking whiskey].
Sinead looks bored and like she would
rather be anywhere but here [Sinead looks bored and looks like she would rather be anywhere but here].
I have an aptitude to risk, but
never gone skydiving [I have an
aptitude to risk, but I have never gone skydiving].
Federica has a bath
every day, but no friends [Federica has a bath every day, but she has no friends].
It is easier to
learn new things than unlearning ingrained bad habits, which is why foreign
students often do well in composition [It is
easier to learn new things than to unlearn ingrained bad habits…].
Getting married is
easy, to stay married is hard [Getting married is easy, staying married is hard].
English grammar is
far harder than appears to beginners [English grammar is far
harder than it appears to beginners].