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初中英语作文范文之学生网上交友
学生网上交友
Should students make friends online? Some people say yes. Internet helps people make many friends. Chatting on line, students can express their feelings and opinions more freely, and even get help for their foreign language studies.
Others, however, think students should not. They say making friends online is a waste of time, which should be spent more meaningfully on study. Besides, some students get cheated online.
It is my opinion that students should place their study, health and safety before other things. As for friendship, we can readily find it in our classmates and other people around us.
以上就是对英语作文学生网上交友的书写,同学们已经很好的完成了吧,后面我们将书写更多的英语作文进行很好的练习。
must用法详解
1. 表示“必须”、“一定要”
(1) 可用于肯定句、否定句或疑问句;用于否定句时,mustn’t 的意思是“一定不要”、“不能”,而不是“不必”。如:
You must finish it today 初二. 你一定要在今天完成它。
You must see the doctor. 你一定要看医生。
Must you go so soon? 你一定得这么早就走吗?
We mustn’t think only of ourselves. 我们可不能只考虑自己。
(2) 主要表示现在或将来,但有时(如在间接引语中)也可表过去(=had to)。如:She asked if she must (had to) leave. 她问她是否一定要离开。
(3) 对于must 开头一般疑问句,若要作否定回答,可用needn’t、don't have to,不用mustn’t。如:"Must I come over tonight?" "No, you needn’t." “我今晚必须过来吗?”“不必。”
(4) 其后可接被动结构或进行形式。如:Something must be done to stop it. 必须采取措施来阻止它。I think I must be going. 我想我得走了。
2. 表示推测
意为“准是”、“一定是”,注意以下几点。如:(1) 通常只用于肯定句,在否定句或疑问句用 can 代之。如:It must be true. 那一定是真的。比较。如:Can it be true? 那可能是真的吗? / It can’t be true. 那不可能是真的。
(2) 后接动词原形,表示对现在情况的推测。如:He must be wrong. 他一定错了。The man must have a lot of money. 这个人一定有不少钱。
【注】must 表示对现在情况的推测后接动词原形时,该动词通常为状态动词(如 be, have, know 等),若为动作动词,通常要转换其他说法。如要表示“他一定会赢”,通常不说He must win,可说He is sure to win。(He must win的意思是“他必须要赢”)
(3) 其后可接进行式或完成进行式,用以谈论一个正在进行的动作。如:He must be writing a letter to his girl friend. 他一定在给他女朋友写信。Someone must have been smoking here.一定有人一直在这里抽烟。
(4) 后接完成式,用来谈论已发生的情况。如:
He must have arrived already.他一定已经到了。I didn’t hear the phone. I must have been asleep. 我没有听到电话铃,我一定是睡着了。
3. 表示“应当”相当于should, ought to的意思。如:You must say hello to her.你应当跟她打个招呼。We must go and have a weekend there.我们应当到那里度周末。
4. 表示“偏偏”
有时表示不巧,有时表示固执,通常都是指令人不快的事。如:Must you make so much noise? 你就非得弄出这么大的声音吗?Why must you always interrupt me? 你为什么硬是老要打断我?We were ready to leave, but the baby must catch cold. 我们刚准备好要走, 可孩子偏偏得了感冒。Just when I was busy, the neighbor must come and chatter. 正当我忙碌的时候,邻居偏偏过来聊天。
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