母音：a[ə] [əˈbɔrt][ɚ][ˈsɪstɚ]其他全是四声[i]  [I]     [ 

vi /etc/inittab     修改图形界面/命令行   adduser jason       增加用户jason passwd jason        设定jason用户的密码ls   查看目录   -S 按文件大小排列   -a 查看隐藏文件（以点开头的文件）cd  进入/退出目录pwd  显示当前目录cp test.txt  ../   拷贝test.txt文件到上级目录 cp test ../ -r     拷贝test目录到上级目录mv test.txt ../    剪切test.txt文件到上级目录file test.txt      查看test.txt文件的属性tar xvjf test.tar.bz2  解压test.tar.bz2文件 tar xvzf test.tar.gz   解压test.tar.gztar cvjf test.tar.bz2 test  压缩test文件夹到test.tar.bz2压缩包 tar cvzf test.tar.gz test   压缩test文件夹到test.tar.gz压缩包

Vi/VIM使用i/a 进入编辑模式q!wq!vim makefile :set /test_test 查找“test_test”字符串

what is robert's job?He's an engineer namenationalityjobkeyboardoperatorengineer I am a new studentMy name's Robert Are you French?yes, I am. What nationality are you?I'm Italian What's your nationality?Where are you from?What nationality is he? Are you a teacher?What's your job?What's his job? =====================What's your name?My name's Robert.Are you Robert? What nationality are you?I'm Italian.Are you Italian? What's your job?I'm an engineer.Are you an engineer? ===================policeman=>What's you job?I'm a policeman. policewoman=> taxi driver=> air hostess=> postman=>what's his job?he's a postman. nurse=> meehanic hairdresser house wife milkman