七年级英语下册【Unit1】语法及练习（含答案）.docx
七年级英语下册【Unitl】语法及练习（含答案）情态动词can的用法一、基本用法1.表示能力（如体力和脑力方面），意为"能；会"等。例如：Canyou speak English?你会讲英语吗？Canyou play the piano?你会弹钢琴吗？2 .表示请求或允许，多用在口语中，意为"可以；能"等。用于疑问句中用来提出要求， 用于否定句表示不允许。例如：CanI help you?我能帮助你吗？Youcan, t play basketball.你不能玩篮球。Canyou.?"请你好吗？”表示说话人的请求；CanI.?"我可以吗？”用来征求对方是否允许自己做某事。如在句末加上please 一词就显得更有礼貌了。例如:Canyou help me, please?请你帮助我好吗？3 .表示可能。例如：Hecan be at home now.他现在可能在家。Themoon can1 t always be full.月亮不可能常圆。4 .表示怀疑。在表达此意时，只能用于一般疑问句中，带有感情色彩。例如：Canit be true?那会是真的吗？二、句式变化如下：1.在变否定句时，直接在can后加 上"not"，可缩写成can' t或cannot,但不能写成cann'工例如：Hecan swim. * He can' t swim.Tonycan see the pen on the desk.-* Tony cannot see the pen on the desk.在变T殳疑问句时，直接移到主语前（原主语的首字母改成小写,第一人称应变为第二 人称）即可。例如：lean see an orange on the table. Canyou see an orange on the table?其回答可用Yes , OK或Certainly等作肯定回答；用N。或Sorry等作否定回答。例 如：Canyou look after my dog, please?你能照看一下我的狗吗?一OK.可以。用Certainly回答。此时语气更为肯定。CanI see your piano?我能看看你的钢琴吗？一Certainly.当然可以。Lean和could表示能力(1) can表示现在的能力，也表示将来的能力，could表示过去的能力。例如：I can' t speakFrench. But I can speak English.我不会说法语，但我会说英语。She could play thepiano when she was only six.她六岁的时候就会弹钢琴了。(2 ) can表示能力时与be able to do sth的意思相同；值得注意的是，can只有现在 时和过去时两种时态，而be able to do sth可以用于各种时态。例如：Look! I can do it.看,我能做它。They are able tosing these English songs.他们能唱那些英语歌曲。At that time Icould still read without glasses.那个时候,我仍然可以不戴眼镜看书。(2) can, could和 may表示许可can表达许可。表达许可基本上可分为“请求"和嗨许"两种。例如：Can I use yourtelephone?我可以借用你的电话吗？Yes, of courseyou can.可以呀，当然可以。(3) could表达许可比can来的更加委婉。例如：Could/Can I useyour pen?我可以借用你的钢笔吗？Yes, of courseyou can.当然可以。(不能说 Yes, you could.)may表达许可。例如：May I come in?我可以进来吗？注意：can和may都可表示"准许、请求,许可"，此时两兄弟同义，可以互换使用。 不过在这方面用may比用can好一些，因为在表示"请求"时,may表现的更谦虚， 更委婉一些。例如：You can/may gohome with your mother now.现在你可以和妈妈一块回家了。语法练习一、单项选择(10分)()l.She is very old,she canstill look after herself.A. butbecauseB. unlessif()2. Come on, let s!I just want to take it easy. Myfeet are killing me.A. studychatB. dancelisten()3.your brother speak Japanese?一Yes, he has learnt it in Tokyo for three years.A. ShouldMustB. CanMay()4. Listen, the music sweet.It' s Yesterday Once More, my favorite.A. soundssmellsB. feelslooks()5.A代er school, I had a long with my teacher about my study.A. talkwordB. speechstory()6.1 can play the guitar, but I play the violin.A. donz tam notB. can' tmustn* t()7.is her favorite subject?Her favorite subject is art.A. WhyWhenB. WhoWhat ()8. Tom can play tennis butcan* t play guitar.A . the, the B. /, / C . the, / D./, the ()9 .Miss King isgood music .She can be good children in themusic club.A . at, atB . with, withC . at, withD . with, at ()10 .he can our school play.A . Maybe, inB . Maybe, be inC . May be, inD . May be, be in二、在B栏中选择A栏的答句.(10分)（）1. Can he sing or dance ? A. Yes, I am.（）2. Are you playing computer? B. He can dance.（）3. What club do you want to join ? C. Yes, I can.（）4. Can you sing well?D. Sounds great.（）5. Let' s tell stories after class. E. Music club.三、句型转换：（10分）Can Bob playthe violin or play the drums?.（选用 the violin 进行回答）1. Miss Liu cansing and dance.（改为否定句）Miss Liu dance.2. Li Lei can playthe piano.（改为一般疑问句）Li Lei the piano?3. She wants tojoin the music club.（就划缭B分提问） she tojoin?4. We need him tohelp with sports for English-speaking students.（改为一身殳疑问 句）you help with sports forEnglish-speakingstudents.?四、将下列句子译成英语。（10分）. Lucy想当一名艺术家。1 .我想加入艺术俱乐部。2 .琳达很会跳舞和唱歌。3 .请打6877455向李老师咨询更多的信息。4 .你的哥哥会打篮球吗？参考答案一、15ACCAA 610CDDCB二、15 BAECD三、l.He can play the violin 2. can' t sing, or 3. Can, play 4. What clubdoes, want 5. Do, need him to四、1. Lucy wantsto be an artist.2.1 want to join the art club.3. Linda can sing and dance well.或 Linda is good at singing and dancing.4. Please call Mr Li at 6877455 for more information.5. Can your brother play basketball?
