already/ yet /still
Ⅰ. already. adv. “已經”多用於肯定句中,通常與動詞的完成時或進行時連用。也可用於疑問句,但不表真心的疑問,而表“驚奇”。它多置於句中。有時為了強調而置於句末。如:
① I’ve seen the film already.
② The train has already left. 火車已經開走了。
③ Have you already had breakfast? 難道你已經吃過早餐了?
Ⅱ. yet adv “已經、仍然、還”一般只用於否定句或疑問句,且常常置於句末。如:
① He hasn’t found his bike yet他還沒有找到他的'自行車。
Ⅲ. still adv “仍然、還”可用於各種句中,且一般只用於句中。如:
① Do you still teach in that school? 你還在那所學校教書?
[注]:still在句中的位置不同,其意義也不同。如:
① He is still(還)standing there.
② He is standing there still(adj.不動的、靜止的)他站在那兒一動也不動。