新概念第一冊知識點總結講解-在線瀏覽
2024-07-31 06:17本頁面
【正文】 hat did you do yesterday?動詞的過去式變化：be動詞：am/iswas arewere規(guī)則動詞：1. 直接在詞尾加ed。如：like—liked, live—lived, use—used, move—moved3. 以一個元音字母加一個輔音字母結尾的重讀閉音節(jié)動詞，先雙寫結尾的輔音字母，再加ed。如：study—studied, carry—carried, hurry—hurried, marry—married不規(guī)則動詞：Havehad eatate drinkdrank gowent ecame seesaw hearheard putput cutcut 等等三、現(xiàn)在進行時：概念：表示此時此刻或現(xiàn)階段正在進行的動作及行為。They are playing basketball on the playground.I am not reading anything.Is he waiting for the bus?What are you doing now?動詞ing形式的變化規(guī)則：1 一般情況下，直接在動詞后加－ing work working sleep sleeping study studying2 動詞以不發(fā)音的－e結尾，要去－e加－ing take taking make making dance dancing 3 重讀閉音節(jié)的動詞，要雙寫詞尾字母，再加－ing cut cutting put putting begin beginning 4 以－ie結尾的動詞，把變成y再加－ing lie lying tie tying die dying四、過去進行時：概念：表示過去某段時間或某一時刻正在發(fā)生或進行的行為或動作。基本結構：was/were+doing否定形式：was/were + not + doing.一般疑問句：把was或were放于句首。時間狀語：already, just,yet, since…, for…,….基本結構：have/has + done否定形式：have/has + not +done.一般疑問句：have或has。1. 直接在詞尾加ed。如：like—liked, live—lived, use—used, move—moved3. 以一個元音字母加一個輔音字母結尾的重讀閉音節(jié)動詞，先雙寫結尾的輔音字母，再加ed。如：study—studied, carry—carried, hurry—hurried, marry—married不規(guī)則動詞：需要特殊記憶。時間狀語：before, after….基本結構：had + done.否定形式：had + not + done.一般疑問句：had放于句首。時間狀語：tomorrow, next day(week, month, year…),soon, in a few minutes, the day after tomorrow, …基本結構：①am/is/are going to + do；②will + do.否定形式：①am/is/are not going to + do；②will not + do一般疑問句：①be放于句首；②will提到句首。Can1, 表示能力，“能夠…”I can swim very well.He can’t sing or dance.2, 表示請求，“可以…嗎？” Can I help you? Can you give the glass to me, please?Could1, can的過去式，表示過去的能力，“能夠…” He could climb the mountain 30 years ago, but now he can’t.2, 表示請求，比can 更加委婉客氣，此時could非can的過去式。“可以…嗎？”May I e in?May I use your pen?Must 1, 表示“必須…” I must go now. You must finish your work before you leave the pany.2, mustn’t表示“禁止…” Kate，you mustn’t play with the knife, because it is too dangerous. You mustn’t smoke in the classroom.Had better “最好…”否定形式：had better notYou had better put on more clothes. It is cold outside.We’d better leave at once.You had better not eat eggs.You’d better not go out at this time.Have to “不得不…”David has to take care of his litter sister because his parents are not at home.They have to stay at home because it is raining heavily outside.形容詞的原級，比較級和最高級（一）規(guī)則變化：1．絕大多數(shù)的單音節(jié)，詞尾加er ，esttall—taller—tallest 2．以不發(fā)音的e結尾的單音節(jié)詞只加r，stnice—nicer—nicest , able—abler—ablest 3．以輔音字母加y結尾的雙音節(jié)詞，改y為i再加er，esteasy—easier—easiest 4．只包含一個元音，并且以一個輔音字母結尾的重讀閉音節(jié)詞，雙寫結尾的輔音字母，再加er，estbig—bigger—biggest hothotterhottest5．少數(shù)以er，ow結尾的雙音節(jié)詞末尾加er，est clever—cleverer—cleverest, narrow—narrower—narrowest 6．其他雙音節(jié)詞和多音節(jié)詞，在前面加more，m
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