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Modals 情態(tài)動詞
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從下面選項中選擇正確答案；單擊“核對答案”按鈕，核對你的答案.
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1 : When we were children, we __________ tidy our rooms before we could watch TV. |
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The possible answers were:
must
had to
have to
should
You said:
must
had to
have to
should
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對不起，這不是正確答案。你不能在過去時態(tài)的句子中使用 must.
恭喜你，答對了！ Must 和 have to 的過去式都是had to.
對不起，這不是正確答案。 這里的時態(tài)不對。
對不起，這不是正確答案。Should 不是一個過去式，不能用在這個過去時態(tài)的句子中。
你沒有回答這個問題。
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2 : Now I have a good salary, I __________ worry about paying the rent. |
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The possible answers were:
mustn't
have to
don't have to
must to not
You said:
mustn't
have to
don't have to
must to not
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對不起，這不是正確答案。Must 是必須的意思，有一種強制性，不做不行。但這個句子的語氣并沒有這么強烈，僅僅是說沒有必要擔心。所以你需要另外一個情態(tài)動詞。
恭喜你，答對了！這句話是說，我沒有必要擔心交房租了。
對不起，這不是正確答案。 Must to not 語法上不正確。
對不起，這不是正確答案。Have to 是說有必要擔心。顯然和這個句子想表達的意思相反。
你沒有回答這個問題。
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3 : Which sentence has the strongest obligation? |
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The possible answers were:
I have to call my mum because it's her birthday.
I ought to call my mum because it's her birthday.
I should call my mum because it's her birthday.
I could call my mum because it's her birthday.
You said:
I have to call my mum because it's her birthday.
I ought to call my mum because it's her birthday.
I should call my mum because it's her birthday.
I could call my mum because it's her birthday.
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恭喜你，答對了！ Have to 表示有一種責任性或強制性做某事。如果不做那件事，可能會有后果產(chǎn)生。
對不起，這不是正確答案。盡管ought to 有時語氣也很強烈，但是這里沒有have to 強烈，并且這種責任感更多由外部原因引起。
對不起，這不是正確答案。Should 表示一種比較弱的責任性。
對不起，這不是正確答案。Could 不表示責任性。它只表示一種可能性。
你沒有回答這個問題。
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4 : You __________ use a video camera to record films while you are in the cinema. It's illegal. |
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The possible answers were:
oughtn't to
can't
shouldn't
don't have to
You said:
oughtn't to
can't
shouldn't
don't have to
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恭喜你，答對了！ Can't 在這句話中是指有規(guī)定或者法律限制人們做某些事情。
對不起，這不是正確答案。Shouldn't 這個情態(tài)動詞的強制性和責任性不夠強，不能表達出對違反規(guī)定或法律的限制。
對不起，這不是正確答案。Don't have to 意思是說沒有必要。顯然有些辭不達意。你需要使用另外一個情態(tài)動詞。
對不起，這不是正確答案。Oughtn't to 這個情態(tài)動詞的強制性和責任性不夠強，不能表達出對違反規(guī)定或法律的限制。
你沒有回答這個問題。
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5 : For us, the ideal house __________ have three bedrooms but it__________ have a big kitchen. Kitchens aren't very important for us as we rarely cook. |
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The possible answers were:
must/ mustn't
should/ shouldn't
can/ can't
has to/ doesn't have to
You said:
must/ mustn't
should/ shouldn't
can/ can't
has to/ doesn't have to
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對不起，這不是正確答案。盡管第一個選項是正確的，但是第二個選項mustn't 語氣太強了，用在這里不合適。
對不起，這不是正確答案。盡管第一個選項是正確的，但是第二個選項shouldn't 語氣太強了，用在這里不合適。
對不起，這不是正確答案。盡管第一個選項是正確的，但是第二個選項can't 語氣太強了，用在這里不合適。
恭喜你，答對了！ Has to 表示三個臥室是必須的，doesn't have to 表示沒有必要有一個大廚房。
你沒有回答這個問題。
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6 : The doctor says he __________ be careful about his weight and diet because he has a history of heart disease in his family. |
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The possible answers were:
must
has to
should
all of the above
You said:
must
has to
should
all of the above
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恭喜你，答對了！
對不起，雖然 must 用在這里是正確的，但是其它選項也有正確的。
對不起，這不是正確答案。雖然 has to用在這里是正確的，但是其它選項也有正確的。
對不起，這不是正確答案。雖然 should 用在這里是正確的，但是其它選項也有正確的。
你沒有回答這個問題。
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