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Subj(��иҹ) + V. to be +V.ing
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1. �ʴ��֧�˵ء�ó���������鹡����ҷ��оٴ�֧ ��С��ѧ��з��˵ء�ó���
㹢�з��ٴ ����˵ء�ó��鹨������شŧ�Ҥ�
I am waiting for my friend.
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She is reading Pra-Apai-Manee. �ѹ���ѧ��ҹ˹ѧ�������ͧ����������
My sister is watching television.
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2. �ʴ��֧�˵ء�ó��������繵�ͧ�Դ���㹢�з��ٴ�֧
��㹤�����������˵ء�ó����Դ�������º�������� ��Ш���������ŧ�Ҥ�
He is studying French this term. �ҡ��ѧ���¹���ҽ�����������������
3. �ʴ��֧��á��ѧ��зӷ���Դ����Ҥ����觪Ѵ��
We are going to Chiengmai next week.
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She is knocking at the door.
They are working in the office.
I am reading a book.
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Is she knocking at the door ?
Are they working in the office ?
Am I reading a book ?
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She is not knocking at the door.
They are not working in the office.
I am not reading a book.
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