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¡¡¡¡Natural gas has been found in this area. (¿Ï¶¨¾ä)
¡¡¡¡Has natural gas been found in this area? (ÒÉÎʾä)
¡¡¡¡Natural gas has not been found in this area. (·ñ¶¨¾ä)
¡¡¡¡¢Û ´øÓÐÇé̬¶¯´ÊµÄ±»¶¯Óï̬µÄ¹¹³É:ÓÉÇé̬¶¯´Êcan, may, mustµÈ¼ÓÖú¶¯´Êbe,ÔÙ¼Ó¹ýÈ¥·Ö´Ê¹¹³É¡£ÕâЩÇé̬¶¯´ÊûÓÐÈ˳ƺÍÊýµÄ±ä»¯¡£È磺
¡¡¡¡Such shops can be seen everywhere in the city.
¡¡¡¡The composition must be finished next week.
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¡¡¡¡È磺 We use coal¡¡¡¡ to heat homes.
¡¡¡¡¶¯×÷Ö´ÐÐÕß(Ö÷Óï)¡¡¡¡ νÓï¡¡¡¡ ±öÓï(¶¯×÷³ÐÊÜÕß)¡¡¡¡×´Óï
¡¡¡¡Coal is used by us to heat homes.
¡¡¡¡¶¯×÷³ÐÊÜÕß Î½Óï ¶¯×÷Ö´ÐÐÕß ×´Óï
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¡¡¡¡¢Ù ´øÓнé´Ê»ò¸±´ÊµÄ¶ÌÓﶯ´Ê£¬Èçcall on, carry out, look after, take care ofµÈÓñ»¶¯Óï̬ʱ,Ó¦ÊÓΪ²»¿É·Ö¸îµÄÒ»²¿·Ö,ºóÃæµÄ½éËÇ»ò¸±´Ê²»Äܶªµô,Èç:
¡¡¡¡Ö÷¶¯¾ä£ºGrandma looks after my younger brother well.
¡¡¡¡±»¶¯¾ä£ºMy younger brother is well looked after (by my grandma).
¡¡¡¡½ÓÏÂÀ´ÎÒÃÇÒ»¿éÀ´·ÖÎö¼¸¸öÑ¡×Ô¡¶Ö°³ÆÓ¢ÓïµÈ¼¶öλÔÓéÀֵǼÈë¿ÚÏÂÔØÓÃÊé¡·Éϵľä×Ó£º
¡¡¡¡1. Cement was seldom used in building during the Middle Ages.
¡¡¡¡(From Dyslexia )
¡¡¡¡2. Dyslexia first was recognized in Europe and the United States more than 80 years ago.
¡¡¡¡3 However, research has shown that dyslexia is more common in males than in females, and it is found more often in persons who are left-handed.
