Tài liệu QUẢN TRỊ CHẤT LƯỢNG doc

   ! "  #$%&'(&) *+ ,-./%0 /*1 234#555'' '67 8 &'9  :3";<.=0  >?66*1            + @ A B ! B & C D E9 D " FGHIJG$K3H  234#555/ ;L  #G<9'234#555M% N9L  :8'234M% N9  >234#555O1 ;L  P2346*1(&) 6  Q2346RS//1'9  T*+ ,-./%0/*1 UK @ G$HV B  G D $K B HGWU X  USING STILL  Idea of still: a siutuation continues to exist from past to present without change Ex: it was cold yesterday. It is still cold today. We still need to wear coats.  Position: midsentence  Precedes a simple present verb. Ex: we still need to wear coats  Precedes a negative helping verb. Ex: Ann still hasn’t come.  Still is used in either affirmative or negative sentences. USING ANYMORE  Idea of anymore: a past situation doesn’t continue to exist at present : a past situation has changed . Anymore has the same meaning as any longer. Ex: I lived in chicago two years ago, but then I moved to another city. I don’t live in chicago anymore.  Anymore is used in negative sentences  Position: end of sentences. USING SINCE  Since is followed by mention of a specific point in time: an hour, a day , a month , a year, etc.  Since expresses the idea that something began at a specific time in the past and continues to the present. Ex: I haven't eaten since breakfast. I have learned English since 1990 USING FOR  For is followed by the mention of length of time: two minutes, tree hours, four days, five weeks, etc. Ex: he has been here for 2 days. USING EVER  Question with ever frequently use the present perfect Ex: Have you ever been in Hawail? USING NEVER  Never is frequently used with the present perfect. Ex: I have never seen the Pacific Ocean.