Unit1Laughterisgoodforyou●GrammarandusageStep1:GeneralintroductionThissectionhelpsusoverviewpresenttenses
Youareexpectedtoreviewthefourtypesofpresenttense
Theyarethesimplepresent,thepresentcontinuous,thepresentperfectandthepresentperfectcontinuous
Step2:ExplanationIThepresenttense1表示客观事实或普通真理
(不受时态限制)Thegeographyteachertoldustheearthmovesaroundthesun
地理老师告诉我们地球绕着太阳转
JapanliestotheeastofChina
日本位于中国的东方
Thesunrisesintheeastandsetsinthewest
太阳东升西落
2表示现在经常或反复发生的动作或存在的状态,常和often,always,usually,sometimes,everyday,onceaweek等表示频率的时间状语连用
Hetakesawalkaftersuppereveryday
他每天晚饭后散步
Mymotherworksatthesamecompanyasmyfather
我母亲和父亲在同一家公司工作
Wealwayscareforeachotherandhelpeachother
我们总是相互关心相互帮助
3表示主语的特征、性格、能力等
Smithhatesfishandnevereatsany
斯密斯先生讨厌鱼而且从来不吃
MaryspeaksbothEnglishandFrenchverywell
玛丽英语和法语都说的很好