Important sentence patterns:
1. It’s been six years since we last saw each other.2. This is the first time I’ve visited your hometown.3. I feel very fortunate living here.What’s the climate like?5. The rent for an apartment is very high.
Grammar: the present perfect tense
Form:  have/has done
Usage:
1. An action completed in the past but connected with the present situation.
2. An action beginning in the past and still continuing
★ To denote continuous action or state (表连续动作或状态,常和since或for引导短 ...