动词词形变化一览表:规则动词变化表:规则变化原形动词结尾情况现在时单三人称现 在 分 词过去式和过去分词一般情况+s +ing +ed s,x,ch,sh,o结尾+es +ing +ed 辅音字母 +y 结尾y→i,+es +ing y→i,+ed 重读闭音节一元一辅结尾+s 双写辅音字母 ,+ing双写辅音字母 ,+ed不发音的 e 结尾+s 去掉 e,+ing+d ie 结尾+s ie→y,+ing +d 不规则变化have→has;be→is (无) (见不规则动词变化表) 注意:①在加ing 或 ed 时动词如果以“r”结尾 ,尾音节又重读的动词,“r”应双写
②s/es的读音规则:在清辅音后读[ s];在浊辅音后和元音后读[z];在 [ s ]、[z]后读 [ iz]
③ed 的读音规则:在清辅音后读[t];在浊辅音后和元音后读[d];在 [t]、[d]后读 [id]
be(“是 /存在” )动词的各种时态变化:一 般 现 在 时一 般 将 来 时现 在 完 成 时I am ⋯
You are
⋯He/She/It is⋯
We/You/They are⋯
(I 等各人称 ) will be⋯
I am He/She/It is going to be We/You/They are I have been⋯
You have been⋯
She/he/It has been⋯
We/You/They have been⋯
一 般 过 去 时过 去 将 来 时过 去 完 成 时I was ⋯
You were
⋯He/She/It was⋯
We/You/They were⋯
(I 等各人称 ) would be⋯
I was He/She/It was going to b We/You/They were I had been⋯
You had bee