unit1
1. by + doing 通过……方式 如：by studying with a group
by 还可以表示：“在…旁”、“靠近”、“在…期间”、“用、”
“经过”、“乘车”等
如：i live by the river. i have to go back by ten o’clock.
the thief entered the room by the window.
the student went to park by bus.
2. talk about 谈论，议论，讨论 如：the students often talk about movie after class. 学生们常常在课后讨论电影。
talk to sb. === talk with sb. 与某人说话
3. 提建议的句子：
①what/ how about +doing sth.?
如：what/ how about going shopping?
②why don’t you + do sth.? 如：why don’t you go shopping?
③why not + do sth. ? 如：why not go shopping?
④let’s + do sth. &nbs
Unit2 Reading