For the forms of the Past Simple, see Unit 6.
He discovered penicillin in 1928.Man landed on the moon in 1969.The Berlin Wall came down in 1989.| Preposition | Used with |
|---|---|
| in | the twentieth century / 1924 / the 1990s / winter / summer / the evening / the morning / September |
| on | 10th October / Christmas Day / Saturday / Sunday evening |
| at | seven o'clock / weekends / night |
Adjectives describe nouns.
a big dog a careful driverAdverbs describe verbs.
She ran quickly. He drives too fast.To form regular adverbs, add -ly to the adjective. Words ending in -y change to -ily.
| Adjective | Adverb | Adjective | Adverb |
|---|---|---|---|
| quick | quickly | real | really |
| slow | slowly | immediate | immediately |
| bad | badly | easy | easily |
| careful | carefully |
Some adverbs are irregular.
| Adjective | Adverb |
|---|---|
| good | well |
| hard | hard |
| early | early |
| fast | fast |