• Shuffle
    Toggle On
    Toggle Off
  • Alphabetize
    Toggle On
    Toggle Off
  • Front First
    Toggle On
    Toggle Off
  • Both Sides
    Toggle On
    Toggle Off
  • Read
    Toggle On
    Toggle Off
Reading...
Front

Card Range To Study

through

image

Play button

image

Play button

image

Progress

1/11

Click to flip

Use LEFT and RIGHT arrow keys to navigate between flashcards;

Use UP and DOWN arrow keys to flip the card;

H to show hint;

A reads text to speech;

11 Cards in this Set

  • Front
  • Back
  • 3rd side (hint)

Since or Within in a sentence

Probably present perfect should be used.

Since the last time Amy met her friends, none of them has seen her.

At the end of World War II, USA dropped/has dropped two atomic bombs in Japan.

At means at the same time. So the verb dropped is needed.

Before or After in the sentence.

Makes use of Past Perfect Sentence optional

Past perfect should be used for two events that are related.

Scientists learned about ice after the Ice age had happened. Is wrong! Learned and that happening are not related

Single event in sentence.

Past perfect cannot be used, at least there is another part showing that something happened after.

At vs By

At means at the same time. By means one happened before the other.

For an event with uncertainty in the future.

Would must be used

Advise/ Allow/ Forbid

To verb required

Demand/ insist / Mandate

Subjunctive verb required

Persuade / want / forbid

To verb required

Ask / require / intend / order

Can use subjunctive or to verb