1.動詞不規(guī)則變化是指動詞的過去式和過去分詞不按一定的規(guī)則變化。
2.動詞不規(guī)則變化的具體變化規(guī)則如下。
（1）現(xiàn)在式、過去式、過去分詞同形。如 read→read→read，
put→put→put，hit→hit→hit，let→let→let，cost→cost→cost，spread→spread→spread.
I have read this book twice before.
這本書我已經(jīng)讀過兩遍了。
The book hit me on the head.
書打中了我的腦袋。
I put the apple in the corner.
我把蘋果放在墻角。
（2）過去式、過去分詞同形。如 win→won→won，
dig→dug→dug，find→found→found，feel→felt→felt，
leave→left→left，meet→met→met，sit→sat→sat，
stand→stood→stood，say→said→said，
tell→told→told，make→made→made，
hear→heard→heard，sell→sold→sold.
I stood up and turned.
我站起來，轉(zhuǎn)過身。
It was aware of having been found， then it ran away.
它覺察到自己被發(fā)現(xiàn)了，于是逃跑了。
I sat quietly staring at the apple.
我靜靜地坐在那里盯著蘋果。
I felt happy at being praised by parents.
被父母夸獎我感到很高興。
（3）現(xiàn)在式與過去分詞同形。如 come→came→come，
become→ became→become，run→ran→run.
It was aware of having been found， then it ran away.
它覺察到自己被發(fā)現(xiàn)了，于是逃跑了。
（4）現(xiàn)在式、過去式、過去分詞三種各不同形。如 is（am，are）
→was（was， were）→been，do→did→done，
go→went→gone，lie→lay→lain，begin→
began→begun，ring→rang→rung，sing→sang→sung，
swim→swam→swum，see→saw→seen，
eat→ate→eaten，give→gave→given，
take→took→taken，fall→fell→fallen，
know→knew→known，throw→ threw→ thrown，
wear→wore→worn，speak→spoke→spoken，
choose→chose→chosen，break→broke→broken，
drive→ drove→driven，write→wrote→written，
forget→forgot→forgot（ten），get→got→got（ten），
hide→hid→hid（den），show→ showed→show（showed）。
I was reading a book and eating an apple.
我正在吃著蘋果讀書。
A book fell off the bookshelf.
一本書從書架上掉了下來。
I saw a little rat on the top of the shelf.
我看見書架頂上有一只小老鼠。
I took a bottle of liquid medicine to kill the rat.
我拿了一瓶滅鼠藥水。
The rat died before it ate up the apple.
老鼠還沒吃完蘋
2.動詞不規(guī)則變化的具體變化規(guī)則如下。
（1）現(xiàn)在式、過去式、過去分詞同形。如 read→read→read，
put→put→put，hit→hit→hit，let→let→let，cost→cost→cost，spread→spread→spread.
I have read this book twice before.
這本書我已經(jīng)讀過兩遍了。
The book hit me on the head.
書打中了我的腦袋。
I put the apple in the corner.
我把蘋果放在墻角。
（2）過去式、過去分詞同形。如 win→won→won，
dig→dug→dug，find→found→found，feel→felt→felt，
leave→left→left，meet→met→met，sit→sat→sat，
stand→stood→stood，say→said→said，
tell→told→told，make→made→made，
hear→heard→heard，sell→sold→sold.
I stood up and turned.
我站起來，轉(zhuǎn)過身。
It was aware of having been found， then it ran away.
它覺察到自己被發(fā)現(xiàn)了，于是逃跑了。
I sat quietly staring at the apple.
我靜靜地坐在那里盯著蘋果。
I felt happy at being praised by parents.
被父母夸獎我感到很高興。
（3）現(xiàn)在式與過去分詞同形。如 come→came→come，
become→ became→become，run→ran→run.
It was aware of having been found， then it ran away.
它覺察到自己被發(fā)現(xiàn)了，于是逃跑了。
（4）現(xiàn)在式、過去式、過去分詞三種各不同形。如 is（am，are）
→was（was， were）→been，do→did→done，
go→went→gone，lie→lay→lain，begin→
began→begun，ring→rang→rung，sing→sang→sung，
swim→swam→swum，see→saw→seen，
eat→ate→eaten，give→gave→given，
take→took→taken，fall→fell→fallen，
know→knew→known，throw→ threw→ thrown，
wear→wore→worn，speak→spoke→spoken，
choose→chose→chosen，break→broke→broken，
drive→ drove→driven，write→wrote→written，
forget→forgot→forgot（ten），get→got→got（ten），
hide→hid→hid（den），show→ showed→show（showed）。
I was reading a book and eating an apple.
我正在吃著蘋果讀書。
A book fell off the bookshelf.
一本書從書架上掉了下來。
I saw a little rat on the top of the shelf.
我看見書架頂上有一只小老鼠。
I took a bottle of liquid medicine to kill the rat.
我拿了一瓶滅鼠藥水。
The rat died before it ate up the apple.
老鼠還沒吃完蘋