Singular & Plural    Subject & Verb Agreement    Grammar Help    Game Tips:

- If the subject of a sentence is singular, then the verb must also be singular.
- If the subject of a sentence is plural, then the verb must also be plural.

- In the sentence 'A bird sings in the tree.', the subject 'bird' is singular, and the verb 'sings' is singular.
- In the sentence 'Birds sing in the tree.', the subject (=noun) 'Birds' is plural, and the verb 'sing' is plural.

- Notice that adding an 's' to a noun can make it plural, but for verbs it's different.

- The noun 'bird' is singular since it refers to one bird.
- The noun 'birds' is plural since it refers to more than one bird.

- Most plural nouns end in an 's' or an 'es'. Examples: toys, students, cars, glasses, buses, etc...
   Exceptions include: teeth, feet, children, geese, etc...

- In contrast, an 's' added to the present tense of a verb often makes the verb singular.
   Here are 2 sample sentences: Children learn. A child learns.

- It may take a minute to load the game at dial-up speeds.
- The game can be played using the mouse by itself or using the keyboard by itself.
- The score report automatically appears after you have made 10 choices.
- The Grammar score is based on your choices only and does not count the pterrodactyl hits.
- The Game score is reduced by the number of pterrodactyl hits.
- If the game doesn't respond to keyboard input,
    click inside the game area to reset the game's focus.
- The game speeds up as your score increases. Adjust this with the - and + keys.
- Refresh/Reload the web page to start over again.

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