【篇一】
基數(shù)詞和序數(shù)詞的用法
1. hundred, thousand, million 與數(shù)字連用,表示一定量的具體數(shù)字,不用復(fù)數(shù),但表示不定概念可用復(fù)數(shù)
例:three hundred people, millions of people
2. 基數(shù)詞表示時刻。
例:7點 seven o'clock, 7:20 seven twenty
3. 給某些事物編號
例:Lesson One=the first lesson
Bus No. 2 7月1日=July I (July Ist)
1996年6月3日=June 3, 1996=June the third, nineteen ninety-six
4. 有關(guān)分?jǐn)?shù)表示法。分子是基數(shù)詞,分母是序數(shù)詞。當(dāng)分子大于1時,分母就用復(fù)數(shù)。
例:I've read one-fifth of the books.
I've finished three-fifths of the words.
5. 有關(guān)倍數(shù)表示法
兩倍用twice, 三倍以上用數(shù)詞+times, 要注意倍數(shù)在句子的位置。
例:The door is three times the size of this.
6. 十位數(shù)字(個位為零)的基數(shù)詞以復(fù)數(shù)形式出現(xiàn)時,表示年代、年齡
例:She is a good-looking woman in her forties. (forties 指40-49歲之間)
【篇二】
動詞ing的變化規(guī)則
1.一般情況下,直接加ing,如:cook-cooking
2.以不發(fā)音的e結(jié)尾,去e加ing,如:make-making, taste-tasting
3.如果末尾是輔音字母加一個元音字母和一個輔音字母,雙寫末尾的輔音字母,再加ing,如:run-running, stop-stopping
be to和be going to
be to 表示客觀安排或受人指示而做某事。
be going to 表示主觀的打算或計劃。
I am to play football tomorrow afternoon. (客觀安排)
I'm going to play football tomorrow afternoon. (主觀安排)
【篇三】
used to / be used to的時態(tài)
used to + do:"過去常常"表示過去習(xí)慣性的動作或狀態(tài),但如今已不存在。
Mother used not to be so forgetful.
Scarf used to take a walk. (過去常常散步)
be used to + doing: 對……已感到習(xí)慣,或"習(xí)慣于",to是介詞,后需加名詞或動名詞。
He is used to a vegetarian diet.
Scarf is used to taking a walk.(現(xiàn)在習(xí)慣于散步)
典型例題
---- Your phone number again? I ___ quite catch it.
---- It's 69568442.
A. didn't B. couldn't C. don't D. can't
答案A. 本句雖沒有明確的時間狀語,但從語意上看 出,在聽的時候沒有聽懂這個動作發(fā)生在過去,因此應(yīng)用過去時。