1. so that引导目的状语从句，意为“为了，以便”。
2. that引导的名词性从句：
Their belief is that...(表语从句)
Prince William...said he was delighted that...(宾语从句)
What do you think of the arguement that...(同位语从句)
3. It is likely to be...固定句式，意为“可能……”。
4. However, not all advertising is...部分否定表达法。
5. It doesn't mean that固定句式，意为“那并不意味着……”。
6. 虚拟语气在if条件句中的用法
(1)叙述与现在事实相反。
主句：would/should/could/might do
从句：did(一般过去时，be用were)
(2)叙述与过去事实相反。
主句：would/should/could/might have done
从句：had done(过去完成时)
(3)叙述与未来事实相反。
主句：would/should/could/might do
从句：①did(be用were)；②should do；③were to do
