七年级英语上册周练测试8.doc

七年级英语上册周练测试8.doc. net 教师助手学生帮手家长朋友 . net . net 教师助手学生帮手家长朋友 . net 一、定义与讲解二、一般现在时:表示经常性的事情,经常性的动作或一般性事实。三、时间状语: often 经常, usually 通常, always 总是, every 每个, 四、 sometimes 有时, at…在几点钟五、只有在第三人称单数用动词的“三单变化”,其他用动词的原形。六、三单变化: 1. 多数在动词后+ s play — plays (2 )以字母 s, x, ch, sh或o 结尾的动词,在词尾直接加-es. watch---watches fix---fixes do---does go---goes (?)以“??字母加-y”结尾的动词,??变 y?i ?加-es. try---tries study---studies cry---cries fly---flies 2. ???变化? have----has 二、一般现在时用? 1. 表示经常性,??性, ??性的动作或?在的状?. 通常与?词 sometimes, often, usually, always, every day ?year, month ?, once ?twice, three times? a day, ?时间状语?用。?hey usually go to school ?y ?i?e. . net 教师助手学生帮手家长朋友 . net . net 教师助手学生帮手家长朋友 . net ?he helps her mother once a wee?. 2. 表示????,??原?,??现?,??事实?。?he sun rises in the east and sets in the west every day. ?omorrow is ?uesday. 三、一般现在时的????: (1 )????有?e 动词或情?动词时,???e 动词或情?动词???语的??变?????在?e 动词或情?动词后?加 not 变??定?. ?: ????: ?he isa student. ?????s she a student??定???he is not a student. ????:? can swim. ?????an you swim ?定??? can not swim. (2) ??????有?e 动词, ??有情?动词时, ?在?语?加?动词 do , does 变????在?语后?语动词?加?动词 don ?t, doesn ?t )变??定?, ?动词后的动词?变?动词原形。?: ????: ?e get up at ???? every morning. ?????o you get up at ???? every morning? . net 教师助手学生帮手家长朋友 . net . net 教师助手学生帮手家长朋友 . net ?定???e don ?t get up at ???? every morning. ????: ?he has a little ?rother. ?????oes she have a little ?rother??定???he doesn ?t have a little ?rothe r