I play
baseball at Hong-Ming High School.
The two boys need a basketball.
The girls speak English.
They like the dog.
The two boys need a basketball.
The girls speak English.
They like the dog.
但你應該可以發現到,這些句子中的主詞,都不是第三人稱單數,亦即都不是 he, she, it 或是人名、單數名詞等;如果將這述的句子中的主詞改為以 he, she, it 開頭,會有什麼變化呢?
è He plays baseball at Hong-Ming High School.
è She wants
a basketball.
è Tom speaks English.
è The student likes the ship.
你可以輕易地發現到,隨著主詞改為第三人稱單數,動詞部份亦有了變化。這種現象在其他的動詞上亦是如此。比較看看底下的對照句:
I
sleep in that room.
àHe sleeps in that room.
àHe sleeps in that room.
You
love dogs.
àShe loves cdogs.
àShe loves cdogs.
We
watch TV on Friday. (every
day: 每天)
àTom watches TV on Friday.
àTom watches TV on Friday.
The
students study English on Mondays. (注意是複數的 the students)
àThe student studies English on Mondays. (注意是單數的 the student)
àThe student studies English on Mondays. (注意是單數的 the student)
想想看一:看了以上的對照句,你得到了什麼的結論?也就是說,當主詞改為第三人稱單數時,動詞會產生什麼變化呢?
主詞「三單」(第三人稱單數現在式)時,動詞字尾的變化:
1. 通常只在動詞字尾加 s 即可:
open → opens
|
find → finds
|
look → looks
|
2. 若原動詞字尾是 s, o, x, ch, sh 等時,則加 es:
teach → teaches
|
Watch → watches
|
wash → washes
|
3. 若原動詞字尾是「子音+y」時,則去 y 再加 ies:
study → studies
|
4. 若原動詞字尾是「母音+y」時,則加s:
play → plays
|
say→ says
|
pray → prays
|
想想看二:你有無發現以上所說的,和什麼規則很像?
1.
2.
想想看三:參考這些規則,試著將以下的動詞改為「三單現」形式:
help→
|
play →
|
||
try →
|
catch →
|
||
pay →
|
remember→
|
||
ride→
|
speak →
|
||
feed→
|
stop →
|
||
close→
|
come →
|
||
eat →
|
hurry →
|
||
make→
|
fly →
|
沒有留言:
張貼留言