动词过去式不规则变化.ppt

巧记初中英语单词动词不规则变化形式英语动词的不规则变化形式

虽多种多样，却也是可以找到一些规律的。看了下面的归纳后，你会发现：动词的不规则变化形式，并不难记！A→A→A型原形、过去式和过去分词三者都相同。（共9个）cost→cost→costcut→cut→cuthit→hit→hithurt→hurt→hurtlet→let→letput→put→putread→read→readset→set→setshut→shut→shutA→B→B型过去式、过去分词相同。（共41个）1.?过去式和过去分词都含有-ought。（3个）bring→brought→broughtbuy→bought→boughtthink→thought→thought2.?词尾有-ild，-end时，只需把d变为t。（4个）build→built→builtlend→lent→lentsend→sent→sentspend→spent→spent01去式、过去分词都含有-aught。（2个）02catch→caught→caught03teach→taught→taught04p变为-ept。（3个）05keep→kept→kept06sleep→slept→slept07sweep→swept→swept08-ell变为-old。（2个）09tell→told→told10sell→sold→sold01去式、过去分词都含有-elt或-ilt。（4个）02smell→smelt→smelt03spell→spelt→spelt04feel→felt→felt05spill→spilt→spilt06过去分词都在原形词尾加t。（3个）07learn→learnt→learnt08mean→meant→meant09spoil→spoilt→spoilt8.?过去式、过去分词词尾是d。（4个）say→said→saidpay→paid→paidlay→laid→laidhear→heard→heard9.?改变元音字母。（11个）meet→met→metget→got→gotsit→sat→satfind→found→foundhold→held→heldspit→spat→spatshine→shone→shonewin→won→wonhang→hung→hungdig→dug→duglose→lost→lost变辅音字母。（1个）1make→made→made2变元、辅音字母。（4个）3leave→left→left4stand→stood→stood5have（has）→had→had6understand→understood→understood701A→B→C型02原形、过去式、过去分词都不相同。（共35个）03→a→u变化。（6个）04begin→began→begun05drink→drank→drunk06sing→sang→sung07ring→rang→rung08swim→swam→swum09sink→sank→sunk2.?词尾为-ow，-aw时，过去式将其变为-ew，过去分词在其原形后加n（show除外）。（5个）blow→blew→blowndraw→drew→drawngrow→grew→grownknow→knew→knownthrow→threw→thrown3.?词尾为“i＋辅音＋e”，过去式将i变为o，过去分词多在原形后加n。若辅音字母为d或t，须双写d或t后加n。（4个）（give，hide除外）drive→drove→drivenwrite→wrote→writtenride→rode→riddenrise→rose→risen去分词在过去式后加（e）n。（5个）01break→broke→broken02choose→chose→chosen03freeze→froze→frozen04