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3.3. Future Time Clauses

Time Clause First
Before | turn in my essay, I’m going to ask someone to read it.
Time Clause Main Clause

Time Clause Second
I'll read your essay before you turn it in.

Main Clause Time Clause

1. A future time clause tells when the future After we do the dishes, I'll serve dessert.
action in the main clause will happen. | will wake up before the alarm goes off.
The time clause can come first or second.
Remember: Use a comma after a time When we arrive, we'll call your office.
clause when it comes first in the sentence.

A
2. future time clause = a time word/phrase Will you call as soon as you arrive?
+ subject + simple present form of a verb.

3. Be careful! Use a future form only in the ¥ |'m going fo take the trash out after the rain stops.
main clause. Use a present form in the X \'m going to take the trash out after the rain will stop.
time clause.

4. The present perfect can also be used in | won't send the e-mail until you have read it.
a future time clause. It emphasizes the
. . . . Present Perfect
completion of the action in the time clause.

4 Complete the exercises.

A Complete each prediction with the correct form of the verbs in parentheses. For future forms,
both will or be going to are possible. Add a comma when necessary.

Aevelop
1. When scientists (develop) clever clothes with cell phone
controls,people (not wear) ordinary clothes.
2. People (purchase) clever clothes online before they

(see) them in stores.

3. In the future, clever car seats (warn) a driver before he or she
(fall) asleep at the wheel.

4. Stores (sell) GPS clothing before they
(offer) health-monitoring clothing.

5. Before people (have) robots as friends they
(use) robots to help around the house.

6. When robots (become) affordable everyone

(want) one.

UNIT 3 LESSON 2 73
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