以下是四級常見的一些句型結(jié)構(gòu)：

1.陳述句：S + 主語 + 謂語 + 賓語 (如：I like apples.)

2.疑問句：W + 主語 + 動詞原形 + 賓語從句 (如：Do you eat apples?')

3.祈使句：Example: Please eat more fruits and vegetables.(如：Please do your homework.)

4.陳述句的被動語態(tài)：(be/se) done by ??./sth./the action of ??./sth.be done in the future/have been done in the past/will be done in the future) (如：The cake is been baked by me.)

5.現(xiàn)在進行時：(be/se) doing sth./there is/has been/has been doing sth.(如：I am watching TV now.)

6.過去進行時：(be/se) did sth.(如：I did my homework yesterday.)

7.將來進行時：(be/se) will do sth.(如：I will go to the store tomorrow.)

8.現(xiàn)在完成時：(have/has) done sth.(如：I have finished my homework today.)

9.過去完成時：(have/has) done sth.(如：He has finished his work before he went home.")。