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【篇一】2021年6月大學(xué)英語四級語法知識
比較：because, since, as和for
1) because語勢，用來說明人所不知的原因，回答why提出的問題。當(dāng)原因是顯而易見的或已為人們所知，就用as或 since。
I didn't go, because I was afraid.
Since /As the weather is so bad, we have to delay our journey.
2) 由because引導(dǎo)的從句如果放在句末，且前面有逗 號，則可以用for來代替。但如果不是說明直接原因，而是多種情況加以推斷，就只能用for。
He is absent today, because / for he is ill.
He must be ill, for he is absent today.
【篇二】2021年6月大學(xué)英語四級語法知識
though, although
注意： 當(dāng)有though, although時，后面的從句不能有but，但是 though 和yet可連用
Although it's raining, they are still working in the field.
雖然在下雨，但他們?nèi)栽诘乩锔苫睢?BR> He is very old, but he still works very hard.
雖然他很老，但仍然努力地工作。
Though the sore be healed, yet a scar may remain.
傷口雖愈合，但傷疤留下了。 (諺語)
【篇三】2021年6月大學(xué)英語四級語法知識
方式狀語從句通常由as，as if，as though，the way，what引導(dǎo);
eg：Always do to the others as you would be done by.
When enter rome do as the romans do.
(1)as從句帶有比喻的含義，意思是"正如…"，"就像";
(2)as if/though："仿佛……似的"，"好像……似的";
有時用虛擬語氣，有時不用;
eg：They completely ignore these facts as if (as though) they never existed. (與事實相反，謂語用虛擬語氣。)
He looks as if (as though) he had been hit by lighting.
(與事實相反，謂語用虛擬語氣。)
It looks as if the weather may pick up very soon.
(實現(xiàn)的可能性較大，謂語用陳述語氣。)
(3)the way：可以連接兩個句子，表達就像……一樣;
eg：I should do the job the way my father did.
Many Europeans now apparently view the US. the way many Americans view Mexican as a cheap place to vacation, shop and party.
(4)what：就像，猶如;
eg：Air is to man what/as water is to fish.
句型：A is to B what C is to D.
eg：A1 Gore calls global warming an "inconvenient truth," as if merely recognizing it could put us on a path to a solution.
put sb. on a path to a solution：找到解決的辦法
【篇一】2021年6月大學(xué)英語四級語法知識
比較：because, since, as和for
1) because語勢，用來說明人所不知的原因，回答why提出的問題。當(dāng)原因是顯而易見的或已為人們所知，就用as或 since。
I didn't go, because I was afraid.
Since /As the weather is so bad, we have to delay our journey.
2) 由because引導(dǎo)的從句如果放在句末，且前面有逗 號，則可以用for來代替。但如果不是說明直接原因，而是多種情況加以推斷，就只能用for。
He is absent today, because / for he is ill.
He must be ill, for he is absent today.
【篇二】2021年6月大學(xué)英語四級語法知識
though, although
注意： 當(dāng)有though, although時，后面的從句不能有but，但是 though 和yet可連用
Although it's raining, they are still working in the field.
雖然在下雨，但他們?nèi)栽诘乩锔苫睢?BR> He is very old, but he still works very hard.
雖然他很老，但仍然努力地工作。
Though the sore be healed, yet a scar may remain.
傷口雖愈合，但傷疤留下了。 (諺語)
【篇三】2021年6月大學(xué)英語四級語法知識
方式狀語從句通常由as，as if，as though，the way，what引導(dǎo);
eg：Always do to the others as you would be done by.
When enter rome do as the romans do.
(1)as從句帶有比喻的含義，意思是"正如…"，"就像";
(2)as if/though："仿佛……似的"，"好像……似的";
有時用虛擬語氣，有時不用;
eg：They completely ignore these facts as if (as though) they never existed. (與事實相反，謂語用虛擬語氣。)
He looks as if (as though) he had been hit by lighting.
(與事實相反，謂語用虛擬語氣。)
It looks as if the weather may pick up very soon.
(實現(xiàn)的可能性較大，謂語用陳述語氣。)
(3)the way：可以連接兩個句子，表達就像……一樣;
eg：I should do the job the way my father did.
Many Europeans now apparently view the US. the way many Americans view Mexican as a cheap place to vacation, shop and party.
(4)what：就像，猶如;
eg：Air is to man what/as water is to fish.
句型：A is to B what C is to D.
eg：A1 Gore calls global warming an "inconvenient truth," as if merely recognizing it could put us on a path to a solution.
put sb. on a path to a solution：找到解決的辦法