å 为What's Daing doing?æ¯ç°å¨è¿è¡æ¶ï¼ç°å¨è¿è¡æ¶çç»ææ¯ï¼am\is\are+å¨è¯ingï¼ï¼æ以åçä¹åºè¯¥ç¨ç°å¨è¿è¡æ¶,æ 第ä¸ç©ºå°±æ¯ He ( is talking to) his friend on the phone.ä»æ£å¨åæåæçµè¯;
第äºãä¸ç©ºæ ¼å°±å¡«ç°å¨è¿è¡æ¶ (What is his) Grandpa (doing) ä»çç·ç·å¨å¹²ä»ä¹ï¼
第åç©ºæ ¼å°±å¡« Oh, he (is watching TV)å¦ï¼ ä»å¨ççµè§ã
第äºé¢ä»What are they doing?ä¹ç¥æ¯ç°å¨è¿è¡æ¶ï¼æ以åºè¯¥They (are waiting for) the bus ä»ä»¬æ£å¨çå ¬äº¤è½¦; She (is reading) a book 她æ£å¨ç书
He (is talking to) his friend on the phone, 他正在和朋友打电话; (What is his) Grandpa (doing) 他的爷爷在干什么; Oh, he (is watching TV)哦, 他在看电视
2. They (are waiting for) the bus 他们正在等公交车; She (is reading) a book 她正在看书
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