Unit3 The Computer and the Information Age-grammar教案
<5>用一般現在時表示將來。 如：next christmas falls on a tuesday the train leaves at 7:30 this evening . the plane takes off at 6:40. 3》警示 除了上述那些之外，也用be about to/be on the point of /be on the middle of/ 表將來。 如：the meeting is about to begin. we are on the point of going out ... 但值得注意的是這種形式不和將來的時間用在一起。我們不可以說they are about to leave this afternoon. 4。進行時 1》概念 表示某時某刻某階段正在進行的動作。 2》理解 進行的動作包括現在，過去和將來。 <一> 現在進行時 本結構是am/is/are+doing構成的形式。這種時態表示的動作主要與現在時間有關系。有如下的用法。 <1> 表示此刻正在進行或發生的動作 常伴有時間狀語。如：now/at present/ at the moment at present, the staff are holding a meeting. where are they having the basketball match ? <2> 表示現階段正在進行的動作。 i usually get up at seven, but i'm getting up at six every day this week to prepare my lessons. selecting a mobile phone is difficult. the technology is changing . <3> 如果和表示頻度的時間狀語連用，不表示動作的進行，而表示動作的重復性，在語意上帶有感情色彩。如： you are continually finding fault with me.<表不滿》 he is always thinking of how he could do for the people《表贊揚〉 the old man is constantly complaining of his watch being slow.〈發牢騷〉 〈二〉過去進行時。 本結構是was/were+doing 構成的形式。它表示的狀態或動作主要和過去的時間有聯系，所以往往和表示過去的時間連用。 〈1〉表示過去某時刻正在進行的動作。如： what were you doing at ten last night? when i got up this morning, it was raining outside. <2> 表示過去某階段中正在進行的動作。如： at that time, he was working in a pla unit. in those years he was having a happy life. <3> 在敘述故事的背景時，為了使故事的語言更加生動，讓讀者有身臨其境的效果，多用進行時。如：one morning the three sisters were together in the drawing room.mary was sewing, alice was playing the piano, and jane was doing nothing, then suddenly the door opened... 正如現在進行時一樣，過去進行時與表示頻度的時間狀語連用，也能表示某種情感色彩。