话题 spend…on doing

话题 on the books

话题 plan on doing

话题 and so on

话题 on the tree

话题 on upside down

话题 hands-on

话题 on that day

话题 on every Sunday

话题 on our block

话题 on a Saturday

话题 on the table

话题 spending on which

问题 句法问题

chart that makes the list is chief executive, coming in at namber 10 with an average annual salary of $178 400.这里coming是做伴随状语吗？还有come in是系动词短语吗？不然后面为什么可以加at number 10这个介宾短语呢，只有是系动词后面才可以有介词短语...

问题 The main reason for these 后接表语从句，系动词的单复数问题

The main reason for these is that the thermal conductivity of the modified SC in the Structure II is smaller and its specific heat capacity is larger than those of sand gravel in the Structure I (Table 2).The main reason for these后的系动词是不应该使用are，应为我觉得that后面接了...